When a former fistfighter Madis leaves the prison, he feels he will get another chance in life. Nothing can go wrong this time. Madis will be accompanied by his nephew who has something completely opposite in his mind. A game begins where both the weak and the strong get more and more opportunities.

A herd of war-torn and hungry rats tries to get an answer to the question of who is Lili Marleen from a mortally wounded young soldier stuck in a projectile funnel. Is it a reminder of first love or first relationship with a prostitute earning her daily bread? Lili Marleen is not just a distant heroine from a song. Every soldier boy has her own Lili, be it his first love from school or just an imagination. But always, no matter what happens, she is waiting for her soldier underneath the lantern by the barrack gate...

"American summer" is a road movie about life. It is loosely based on the adventures of real Eastern European university students selling books door to door in United States.