You will Watch Code Lyoko Episode 30 online for free episodes with HQ / high quality. Stream cartoons Code Lyoko Episode 30 A Great Day After taking another trip to The Carthage Region and returning to the school, Aelita talks to Jeremie about not being human, unaware that Sissi is recording their conversation. On top of that, the data they had retrieved from The Carthage Region takes over the supercomputer and starts running return trips over and over. Jeremie discovers that returning to the past makes XANA more powerful. During the third return trip Xana possesses Sissi with his new powers and goes after Ulrich. Not only does the group have to deal with Sissi, but they also have to stop the return trips.