Code Lyoko (2003)

Episode Overview

Title: Ultimatum Plot: When Xana takes control of the school principal and captures Odd and Yumi, he confronts Jeremie with a dire choice: hand over Aelita to the Scyphozoa or lose Odd and Yumi forever. In a desperate move, Jeremie and Aelita turn to Sissi for assistance. Surprisingly, Sissi consents to join their efforts, aiming to rescue her father and put an end to Xana's reign of terror.