Summer on Three Wheels is the story of the shy outsider Flake, who not only suffers because his parents named him after the stuttering keyboardist of a famous rock band. He also absolutely fails to confess his love to the girl he secretly yearns for and to assert himself against his rival. So Flake first makes the wrong decisions - and then to the drug dealer Kim and the embittered wheelchair user Philipp. A special kind of tour de force develops from this encounter: a road movie that leads in a Piaggio moped car at 45 km/h from the top of Stuttgart to Lake Constance.

Four men’s destinies slam into each other and intertwine on four balmy summer nights. Old wounds are reopened, new ones appear, unexpectedly there is a new closeness. And, when the sun rises over the city and the striking garbage men, finally ensure German order again, nothing is the same for these four men.

Just a few minutes ago, Paul Lohmann picked up a hitchhiker at the side of the road when he suddenly sees himself lying badly injured in his car. His car has overturned after a crash and Paul is angry about his apparent demise. He was just about to get his career off to a flying start and get his family life back on track. He still had so much planned! Then the hitchhiker, who turns out to be an angel, explains to him that he is in an intermediate world and still has a chance to overturn his fate. But Paul keeps experiencing situations from his past. Will he manage to turn the catastrophe around in time and prevent the car accident?