When Aelita goes inside the waterfall in the polar region, the original tower wasn't there, but in Season 2, there was a tower in there.
Odd mentions finding a way to bring Aelita back to Earth, but that implies that she was already on Earth at some point. The entire gang originally thought that Aelita was an A.I. program through out the first and second season.
When Aelita comes out of the tower in the polar region, it seems to be emitting a white aura (like when Franz takes control of it), not blue (when it's inactive).
When Yumi sweeps Ulrich and correct him on her name, her bellybutton disappears.
Ulrich: By the way, I'm Ulrich. You--you, you're Yuri right? (Yumi sweeps Ulrich) Yumi: It's Yumi!
(Encountering a pair of krabes for the first time) Odd: Great, crabs! Who's got the tarter sauce?
Odd: It's true that at first I thought Sissi was a real babe, but the more I get to know her the more I realize she's uh... uh... how can I put this tactfully? Jeremie: Uh... turkey? Odd: Exactly!
Sissi: And what's this Chinese girl doing here, huh? Yumi: (angrily) I am Japanese!
Sissi: I can't wait to see what I look like on Lyoko! Odd: Me too! With some luck, I won't be the dumbest looking one in the group.
Odd: Has anyone seen Jeremie? Ulrich: He was up all night in his room working on Lyoko after he put the computer back together. Odd: Man, that guy's a real Einstein! Sissi: Who's Einstein?
(Odd sees Yumi in her virtual form) Odd: It's not fair! I'm the only one who looks like a nitwit on Lyoko!
Jeremie: Get ready for the big plunge! Yumi: Big plunge? But I don't have a bathing suit.
Ulrich: You're as stubborn as a mule, aren't you? Yumi: That's right!
Jim: Sorry Sissi, cheerleading is not about being a boomerang juggling baboon!
Yumi: Back for another thrashing? Ulirch: I don't like ending on a bad note. Yumi: That's good. I like a challenge. Ulirch: You're gonna get one!
Odd: (to Sissi and Ulrich) Hey lovebirds, sleep well?
International air dates: France: October 21, 2006
French Title: Le réveil de XANA (Partie 2)
When Jim mentions a giant mechanical teddy bear while Sissi is talking about Lyoko in the infirmary, it is probably foreshadowing of the first episode, "Teddygozilla".
Chronologically this is the first appearance, of Hornets and Krabes. This leaves Megatanks as the only monster that doesn't appear in the two-part prequel.
Aelita discovers her ability to control and manipulate the landscape of Lyoko.
Yumi is the third person to be virtualized out of the Lyoko warriors.
"Maya" discovers that her name is really Aelita.
A person needs to be digitalized in order to remember events that occurred before a "Return to the Past."
Jeremie discovers how to use the Return to the Past program, and uses it for the first time.
Odd spikes his hair for the first time, modeling it after his Lyoko style.
S 4 : Ep 30
(23:36)
S 4 : Ep 29
S 4 : Ep 28
S 4 : Ep 27
(23:48)
User Score: 3435
User Score: 610
User Score: 314
User Score: 309
User Score: 283
User Score: 272
User Score: 248
User Score: 183
User Score: 102
User Score: 72