Mike is a loner: he has no friends, no hobbies, and no girlfriend. That is, until he meets Tschick, a new student who looks like he's been in a lot of fights and tends to be drunk. At the start of summer vacation, Tschick shows up at Mike's door with a stolen car. He and Mike then go on the adventure of a lifetime, with no parents, maps, or plans, but a lot of fun.