The Enfield Haunting (2015)

S1E4 Log Book

Sissi stumbles upon Ulrich's cherished diary, which unfortunately contains secrets about X.A.N.A. and Lyoko. Seizing the opportunity, she plans to blackmail him into a romantic relationship. Meanwhile, Odd, Ulrich, Sissi, and several classmates are en route to a pool when they discover that X.A.N.A. has targeted their bus, intending to crash it into a chemical plant. The group realizes they must rush to Lyoko to assist Aelita in reaching the tower, hoping to save their classmates and protect the city from disaster.