Code Lyoko Episode 19 – Frontier Episode Title:Frontier.Episode Description:When Jeremy yells at Aelita, he tries to go to Lyoko to apologize. Unfortunately, while Yumi is transferring him, she makes a scanner error, which leaves him trapped in a virtual limbo between Lyoko and the real world, so Aelita has to retrieve data to recover Jeremy without support in order to bring Jeremy back, but when she gets to the Mountain Sector, there are a couple of Bloks guarding the tower. Yumi is sent to retrieve Jeremy's laptop to virtualize Ulrich, but gets caught and ends up in the principal's office. Ulrich talks to Sissi to see if she could get Yumi off the hook; Sissi agrees, but only if Ulrich will go out with her for two months. Ulrich agrees on one month and kisses her as a down payment.