0:02 - 0:04 Water...
0:04 - 0:06 Earth...
0:06 - 0:08 Fire...
0:08 - 0:10 Air.
0:11 - 0:14 Long ago, the four nations lived together in harmony.
0:15 - 0:18 Then everything changed when the Fire Nation attacked.
0:19 - 0:22 Only the Avatar, master of all four elements,
0:22 - 0:23 could stop them.
0:23 - 0:25 But when the world needed him most,
0:25 - 0:26 he vanished.
0:27 - 0:28 100 years passed,
0:28 - 0:31 and my brother and I discovered the new Avatar―
0:31 - 0:32 An airbender named Aang.
0:32 - 0:35 And although his airbending skills are great,
0:35 - 0:38 he has a lot to learn before he's ready to save anyone.
0:38 - 0:39 Oof.
0:39 - 0:42 But I believe Aang can save the world.
0:51 - 0:53 I discovered a hidden library.
0:54 - 0:56 I tore through scroll after scroll.
0:59 - 1:01 You did it!
1:01 - 1:02 You're an earthbender.
1:03 - 1:06 Sozin's Comet will return by the end of the summer.
1:06 - 1:10 And Fire Lord Ozai will use its power to finish the war
1:10 - 1:11 once and for all.
1:12 - 1:14 You must defeat the Fire Lord
1:14 - 1:16 before the comet arrives.
1:26 - 1:27 What's out here?
1:27 - 1:30 A lot, actually. There's hundreds of little―
1:30 - 1:32 Shh! I know you can see underground,
1:32 - 1:34 but don't ruin the surprise.
1:34 - 1:35 Just watch.
1:37 - 1:38 ♪ Eh ♪
1:38 - 1:39 Ha ha! Yeah!
1:41 - 1:42 ♪ Eh! ♪
1:42 - 1:44 I'm putting an orchestra together.
1:44 - 1:45 Orchestra, huh? Well...
1:45 - 1:47 ♪ La-di-da ♪
1:47 - 1:49 ♪ Laah ♪ ♪ Diih ♪
1:49 - 1:50 ♪ Daah ♪
1:53 - 1:54 ♪ Eh ♪
1:54 - 1:55 ♪ Eh! ♪
1:56 - 1:57 ♪ Eh! ♪
1:57 - 1:58 ♪ Eh ♪
1:59 - 2:00 This is great and all,
2:00 - 2:03 But don't we have more important things to worry about?
2:03 - 2:04 We should be making plans.
2:04 - 2:06 We did make plans.
2:06 - 2:07 We're all picking mini-vacations.
2:08 - 2:10 There's no time for vacations.
2:10 - 2:12 I'm learning the elements as fast as I can.
2:12 - 2:15 I practice hard every day with Toph and Katara.
2:15 - 2:17 I've been training my arrow off.
2:17 - 2:20 Yeah. What's wrong with having a little fun in our downtime?
2:20 - 2:23 Even if you do master all of the elements, then what?
2:23 - 2:25 It's not like we have a map of the Fire Nation.
2:25 - 2:28 Should we just head west until we reach the Fire Lord's house?
2:28 - 2:31 Knock, knock! Hello, Fire Lord! Anybody home?
2:31 - 2:32 I don't think so.
2:33 - 2:35 We need some intelligence if we're gonna win this war.
2:35 - 2:36 ♪ Laah ♪
2:36 - 2:39 Hee hee! All right. We'll finish our vacations.
2:39 - 2:41 And then we'll look for Sokka's intelligence.
2:43 - 2:44 Your turn, Katara.
2:44 - 2:46 Where would you like to go on your mini-vacation?
2:46 - 2:49 How about the Misty Palms Oasis?
2:49 - 2:50 That sounds refreshing.
2:50 - 2:53 Oh, yeah, I've been there. It's a pristine natural ice spring.
2:53 - 2:56 And I don't usually use the word "pristine."
2:56 - 2:58 It's one of nature's wonders.
3:00 - 3:03 Must have changed ownership since I was here.
3:03 - 3:05 Heh heh.
3:15 - 3:16 Ptooey!
3:27 - 3:28 One mango, please.
3:42 - 3:44 I don't see anything wrong
3:44 - 3:46 with having one of those fruity beverages
3:46 - 3:48 while we plan our strategy.
3:49 - 3:50 Excuse me.
3:54 - 3:56 No worries. I clean up easy.
3:59 - 4:00 You're a living relic.
4:00 - 4:01 Thanks. I try.
4:02 - 4:05 An Air Nomad right front of me.
4:05 - 4:06 Professor Zei, head of anthropology
4:07 - 4:08 at Ba Sing Se University.
4:08 - 4:10 Tell me...
4:10 - 4:13 Which of the air temples do you hail from?
4:13 - 4:14 The Southern Temple.
4:14 - 4:16 Oh, splendid! Now, tell me,
4:16 - 4:19 what was the primary agricultural product of your people?
4:19 - 4:23 Uh, are fruit pies an agricultural product?
4:23 - 4:27 Oh! Truly fascinating. That's one for the journal.
4:27 - 4:30 So, professor, you're obviously a well-traveled guy.
4:30 - 4:32 Do you have a more current map?
4:32 - 4:33 Ours seems to be a little dated.
4:34 - 4:35 Certainly.
4:38 - 4:40 What? No Fire Nation?
4:40 - 4:42 Doesn't anybody have a good map of that place?
4:43 - 4:45 You've made a lot of trips into the desert.
4:45 - 4:46 All in vain, I'm afraid.
4:47 - 4:50 I've found lost civilizations all over the Earth Kingdom,
4:50 - 4:53 but I haven't managed to find the crown jewel―
4:54 - 4:56 Wan Shi Tong's library.
4:56 - 5:00 You've spent years walking through the desert to find
5:00 - 5:01 some guy's library?
5:02 - 5:05 This library is more valuable than gold, little lady.
5:05 - 5:09 It is said to contain a vast collection of knowledge.
5:09 - 5:10 And knowledge...
5:11 - 5:12 Is priceless.
5:12 - 5:14 Hmm. Sounds like good times.
5:14 - 5:17 Oh, it is. According to legend,
5:17 - 5:20 It was built by the great knowledge spirit
5:20 - 5:24 Wan Shi Tong with the help of his foxy knowledge seekers.
5:24 - 5:28 Oh, so this spirit has attractive assistants, huh?
5:28 - 5:30 I think he means they look like actual foxes, Sokka.
5:30 - 5:32 You're both right.
5:32 - 5:33 Handsome little creatures.
5:33 - 5:36 Wan Shi Tong and his knowledge seekers
5:36 - 5:38 collected books from all over the world
5:38 - 5:41 and put them on display for mankind to read
5:41 - 5:43 so that we might better ourselves.
5:43 - 5:45 If this place has books from all over the world,
5:45 - 5:48 do you think they've got info on the Fire Nation? A map maybe?
5:48 - 5:49 I wouldn't know.
5:50 - 5:52 But if such a thing exists,
5:52 - 5:54 it's in Wan Shi Tong's library.
5:56 - 5:59 Then it's settled. Aang, I do believe it's my turn.
5:59 - 6:02 I'd like to spend my vacation at the library!
6:03 - 6:07 Uh, hey, what about me? When do I get to pick?
6:07 - 6:09 You've got to work here a little longer
6:09 - 6:11 before you're qualified for vacation time.
6:11 - 6:12 Hmph.
6:12 - 6:14 Of course, there's the matter of finding it.
6:14 - 6:16 I've made several trips into the Zi Huang desert
6:16 - 6:18 and almost died each time.
6:18 - 6:21 I'm afraid that desert's impossible to cross.
6:22 - 6:25 Professor, would you like to see our sky bison?
6:25 - 6:29 A sky bison? You actually have one?!
6:31 - 6:34 Sandbenders, shoo! Away from the bison!
6:55 - 6:58 Tell me, sky bison, are you the last of your breed?
7:00 - 7:03 Oh, delightful! I only wish I spoke his tongue.
7:03 - 7:06 Oh, the stories this beast could tell.
7:08 - 7:09 Shush, chatty monkey.
7:10 - 7:12 Wow. It shouldn't be too hard
7:12 - 7:13 to find a place like this out here.
7:18 - 7:20 Ah! Does this place even exist?
7:20 - 7:22 Some say it doesn't.
7:22 - 7:25 Shouldn't you have mentioned that before?
7:25 - 7:26 Grr!
7:32 - 7:33 There it is!
7:37 - 7:40 That's what it will sound like when one of you spots it.
7:45 - 7:48 It shouldn't be this hard to spot a giant ornate building from the air.
7:52 - 7:54 Down there. What's that?
7:59 - 8:02 Forget it. It's obviously not what we're looking for.
8:02 - 8:04 The building in this drawing is enormous.
8:13 - 8:14 What kind of animal is that?
8:18 - 8:20 I think that was one of the knowledge seekers.
8:21 - 8:23 Oh, we must be close to the library.
8:23 - 8:26 No. This is the library. Look!
8:29 - 8:30 It's completely buried.
8:38 - 8:40 The library is buried?!
8:40 - 8:43 My life's ambition is now full of sand.
8:44 - 8:46 Well, time to start excavating.
8:49 - 8:52 Actually, that won't be necessary.
8:52 - 8:54 The inside seems to be completely intact.
8:54 - 8:56 And it's huge.
8:56 - 8:58 That fox thingy went in through a window.
8:58 - 9:00 I say we climb up there and give it a look.
9:00 - 9:03 I say you guys go ahead without me.
9:03 - 9:05 You've got something against libraries?
9:05 - 9:06 I've held books before.
9:06 - 9:08 And I got to tell you,
9:08 - 9:10 they don't exactly do it for me.
9:10 - 9:12 Oh, right. Sorry.
9:13 - 9:15 Let me know if they have something you can listen to.
9:20 - 9:24 Don't worry, buddy. I'm not making you go underground ever again.
9:24 - 9:26 You can stay out here with Toph.
9:32 - 9:33 What's up?
9:43 - 9:45 Oh, it's breathtaking.
9:46 - 9:49 The spirit spared no expense in designing this place.
9:49 - 9:51 Look at those beautiful buttresses.
9:51 - 9:52 Hee hee! Hee hee!
9:52 - 9:54 What's funny?
9:54 - 9:56 Nothing. We just like architecture.
9:56 - 9:58 As do I.
10:01 - 10:02 My word!
10:02 - 10:07 The exquisite mosaic handiwork of this tile-rendered avian symbol―
10:07 - 10:10 Eh, nice owl.
10:26 - 10:28 I know you're back there.
10:31 - 10:32 Hello!
10:32 - 10:34 I'm Professor Zei, head of anthropology
10:35 - 10:36 at Ba Sing Se University.
10:37 - 10:39 You should leave the way you came
10:39 - 10:43 Unless you want to become a stuffed head of anthropology.
10:45 - 10:48 Are you the spirit who brought this library to the physical world?
10:48 - 10:53 Indeed. I am Wan Shi Tong, he who knows 10,000 things.
10:53 - 10:55 And you are obviously humans,
10:55 - 10:58 Which, by the way, are no longer permitted in my study.
10:58 - 11:00 What do you have against humans?
11:00 - 11:03 Hmm. Humans only bother learning things
11:03 - 11:05 to get the edge on other humans,
11:05 - 11:09 Like that firebender who came to this place a few years ago,
11:09 - 11:11 looking to destroy his enemy.
11:12 - 11:15 So who are you trying to destroy?
11:15 - 11:19 What? No, no, no destroying. We're not into that.
Then why have you come here?
11:22 - 11:26 Um, knowledge for knowledge's sake.
11:27 - 11:30 If you're going to lie to an all-knowing spirit being,
11:30 - 11:33 you should at least put some effort into it.
11:33 - 11:35 I'm not lying! I'm here with the Avatar,
11:35 - 11:38 And he's the bridge between our worlds. He'll vouch for me.
11:39 - 11:40 Ow!
11:40 - 11:43 Uh, yeah. I'll vouch.
11:43 - 11:46 We will not abuse the knowledge in your library, good spirit.
11:46 - 11:48 You have my word.
11:48 - 11:53 Hmm. Very well. I'll let you peruse my vast collection
11:53 - 11:55 on one condition―
11:55 - 11:57 To prove your worth as scholars,
11:57 - 12:01 you have to contribute some worthwhile knowledge.
12:02 - 12:05 Please accept this tome as a donation to your library.
12:06 - 12:08 First edition. Very nice.
12:12 - 12:14 I have an authentic waterbending scroll.
12:15 - 12:18 Oh, these illustrations are quite stylish.
12:20 - 12:22 Uh, oh! I know.
12:23 - 12:24 Ha!
12:25 - 12:27 I suppose that counts.
12:29 - 12:31 Oh, great spirit, check this out.
12:32 - 12:33 Ta-da!
12:34 - 12:36 It's a special knot.
12:36 - 12:37 That counts as knowledge.
12:38 - 12:40 You're not very bright, are you?
12:42 - 12:44 Enjoy the library.
12:51 - 12:53 Bright enough to fool you.
12:56 - 13:00 So, do you like flying?
13:02 - 13:05 Of course, I'm more comfortable on the ground where I can see.
13:05 - 13:08 Well, I don't see the way you do.
13:08 - 13:11 I feel the vibrations in the ground with my feet.
13:11 - 13:14 But this sand is so loose and shifty,
13:14 - 13:16 It makes everything look fuzzy.
13:18 - 13:20 Not that there's anything wrong with fuzzy.
13:31 - 13:33 Hey! Look at these weird lion-turtle things.
13:34 - 13:36 Ah, I've seen weirder.
13:36 - 13:39 Aang, did you know in a past life, you were left-handed?
13:39 - 13:41 I always knew I was special.
13:51 - 13:54 "The darkest day in Fire Nation history."
13:55 - 13:56 It's got a date at the top,
13:56 - 13:58 but it doesn't say anything else.
14:04 - 14:06 Sokka, where are you going?
14:06 - 14:10 I want to know what happened to the Fire Nation on their darkest day.
14:10 - 14:11 This could be promising.
14:13 - 14:16 The information on the Fire Nation should be right up here.
14:19 - 14:20 Firebenders.
14:20 - 14:23 They destroyed everything having to do with the Fire Nation.
14:24 - 14:25 That's so unfair!
14:25 - 14:28 Just when I think I'm one step ahead of the Fire Nation,
14:28 - 14:31 it turns out they beat us here a long time ago.
14:31 - 14:34 I need to know what happened on the darkest day.
14:36 - 14:39 Hello, little weird fox guy.
14:42 - 14:44 It seems it's trying to assist you.
14:44 - 14:48 Um, sure. I guess I'll follow you.
15:15 - 15:19 This room is a true marvel, a mechanical wonder.
15:19 - 15:22 It's a planetarium that shows the heavens moving.
15:25 - 15:28 This is beautiful, but how is it helpful?
15:29 - 15:32 Maybe these dials represent dates and times.
15:32 - 15:35 Sokka, try entering that date from that parchment you took.
15:35 - 15:40 Shh! Katara, not in front of the fox. He's with the owl.
15:59 - 16:01 Wow! I got to hand it to you, Sokka,
16:02 - 16:04 You picked the best mini-vacation for sure.
16:08 - 16:10 Hey, wait. What happened to the sun?
16:11 - 16:13 Great. You must have broken it.
16:14 - 16:15 It's not broken.
16:17 - 16:20 The sun is behind the moon. It's a solar eclipse.
16:21 - 16:24 It's literally the darkest day in Fire Nation history.
16:24 - 16:26 Now I get it. Something awful happened on that day.
16:26 - 16:28 I don't know what, but I do know why.
16:29 - 16:32 Firebenders lose their bending during a solar eclipse.
16:32 - 16:33 Sorry.
16:34 - 16:35 That makes sense.
16:35 - 16:37 I mean, think of what the lunar eclipse at the North Pole
16:37 - 16:39 did to the waterbenders.
16:39 - 16:40 This is huge.
16:43 - 16:45 Fine. You earned it.
16:47 - 16:50 We've got to get this information to the Earth King at Ba Sing Se.
16:50 - 16:52 We'll wait for the next eclipse.
16:52 - 16:55 Then we'll invade the Fire Nation when they're totally helpless.
16:55 - 16:57 The Fire Lord is going down!
16:57 - 17:00 Mortals are so predictable
17:00 - 17:02 and such terrible liars.
17:09 - 17:11 You betrayed my trust.
17:11 - 17:14 From the beginning, you intended to misuse this knowledge
17:14 - 17:15 for evil purposes.
17:16 - 17:19 You don't understand. If anyone's evil, it's the Fire Nation.
17:19 - 17:21 You saw what they did to your library.
17:21 - 17:23 They're destructive and dangerous.
17:23 - 17:25 We need this information.
17:25 - 17:29 You think you're the first person to believe their war was justified?
17:29 - 17:31 Countless others before you have come here,
17:31 - 17:34 seeking weapons or weaknesses or battle strategies.
17:35 - 17:38 We had no choice. Please. We're just desperate to protect
17:38 - 17:39 the people we love.
17:39 - 17:43 And now I am going to protect what I love.
17:47 - 17:48 What are you doing?
17:48 - 17:54 I'm taking my knowledge back. No one will ever abuse it again.
17:54 - 17:57 He's sinking the building. We've got to get out of here!
17:57 - 18:01 I'm afraid I can't allow that. You already know too much.
18:01 - 18:03 Aah! Aah!
18:12 - 18:14 I already told you. I don't want to snuggle.
18:19 - 18:22 Library's sinking. Library's sinking!
18:23 - 18:25 Hyah!
18:51 - 18:52 Aah!
18:53 - 18:55 Great knowledge spirit, I beg you,
18:55 - 18:59 do not destroy your vast collection of priceless tomes.
19:00 - 19:02 Aah!
19:10 - 19:12 We've got to get back to the surface.
19:14 - 19:16 Sokka, let's go.
19:16 - 19:19 But we still don't know when the next eclipse is gonna happen.
19:19 - 19:21 Don't be stupid. We'll find out later.
19:21 - 19:23 No, we won't. If we leave this place,
19:23 - 19:25 we'll never get the information.
19:25 - 19:27 Aang, come with me to the planetarium. I need cover.
19:28 - 19:29 Katara, take Momo and get out of here.
19:30 - 19:31 But―
19:31 - 19:32 Go!
19:32 - 19:33 Hurry, Sokka!
19:48 - 19:50 What is it now?
19:58 - 19:59 Who is there?
20:07 - 20:08 Why are we doing this?
20:08 - 20:11 Because if this calendar can tell us about eclipses in the past,
20:12 - 20:14 then maybe it can project when the next one will be.
20:14 - 20:16 You can't possibly check every single date.
20:16 - 20:18 I don't have to. We just need to check
20:18 - 20:20 every date before Sozin's Comet arrives,
20:20 - 20:24 because after that, well, try not to think about that.
20:44 - 20:45 Come on, eclipse!
20:49 - 20:51 That's it― The solar eclipse.
20:51 - 20:53 It's just a few months away.
20:54 - 20:57 Got it! Now let's get to Ba Sing Se.
21:15 - 21:17 Don't make me put this down.
21:27 - 21:29 No! Stop sinking!
21:34 - 21:35 No!
21:36 - 21:37 I'm sorry, Appa.
21:56 - 22:00 At least I'll have one specimen to add to my collection.
22:00 - 22:01 Aah!
22:11 - 22:13 Your waterbending won't do you much good here.
22:14 - 22:17 I've studied northern water style, southern water style,
22:17 - 22:20 even foggy swamp style.
22:21 - 22:23 Hyah!
22:25 - 22:28 That's called Sokka style. Learn it.
22:35 - 22:37 Wait! Professor, let's go.
22:37 - 22:40 I'm not leaving. I can't.
22:40 - 22:43 I've spent too long trying to find this place.
22:43 - 22:45 There's not another collection of knowledge
22:45 - 22:46 like this on earth.
22:47 - 22:50 I could spend an eternity in here.
22:50 - 22:51 Just go!
23:20 - 23:22 We got it. There's a solar eclipse coming.
23:22 - 23:24 The Fire Nation's in trouble now.
23:27 - 23:29 Where's Appa?