Code Lyoko

X.A.N.A. has taken control of a teddy bear that comes to life and grows to extreme proportions.

X.A.N.A. takes control of the school's electricity and plans to blow up a power plant.

Stuck at school over the break, Jeremy wants to be ready in case X.A.N.A launches an attack.

Sissi uses Ulrich's diary against him so that he will be forced to pay attention to her. The diary contains details of Ulrich's secret activities and of the existence of Lyokô. She takes advantage of a school trip to attack. But this is no time for Ulrich to get caught in a trap because X.A.N.A has taken control of the electric school bus he and the other students are travelling in. The bus, which has now become a kind of prison-on-wheels, is speeding towards the city's chemical complex.

X.A.N.A has created a computer virus and sent it out on the Internet. All the city's databases have been damaged. Although the problems this causes are quickly solved without major incident, the railway control centre has been hit very hard and can no longer stop two of its trains, which are on a collision course.

X.A.N.A. turns the bulldozers from the school construction zone into weapons.