Ep 21. X.A.N.A.'s Kiss

Love fever has taken over the Academy! First, Aelita catches Jeremy kissing Heidi! Then, Yumi sees Ulrich kiss Sissi! Jeremy finds out that Aelita is going out with Nicolas! The gang is in serious danger of falling apart at the seams, starting with Jeremy who has a huge falling out with Aelita. Once again, XANA is behind it all. This time, it has sent a polymorphous specter which can change its appearance at will to the Academy to divide and rule... but our heroes figure it out with just enough time left to get to Lyoko and save Aelita from the Scyphozoa's clutches.