Code Lyoko

Amnesia (1x17)

Air date: Dec 24, 2003

When Susan gives a lesson on nanotechnology, she has small machine designed to produce the little robots as an example. X.A.N.A. has infected the machine, so when they find it filled with gel, Odd carelessly ends up pushing Ulrich's face into a small scoop of it. Later on, Ulrich gets a headache and faints. When he wakes up, his memory is gone.