Synopsis

On a mission to the Carthage Region, Yumi is attacked by a Scyphozoa, which steals her human DNA and traps her on Lyoko. Adding to her predicament, it’s picture day at school, and absence will result in suspension. After brief deliberation, Ulrich proposes that Sissi impersonate Yumi. Surprisingly, Sissi agrees, asking for no reward in return. Meanwhile, Jeremie works to devise a method of retrieving Yumi. Aelita conceives a solution but withholds it from Jeremie until she reaches Lyoko, ensurin