Mike is a loner: no friends, no hobbies, no girlfriend. That is until he meets Tschick, who's new in school, looks like he's been in a lot of fights and has a tendency to be drunk. At the beginning of the summer break, Tschick shows up at Mike's door with a stolen car and together they start the adventure of their lifetime: no parents, no maps, no plan - but definitely a lot of fun.