This stupid heart

Every night, Lenny finds it quite entertaining to accidentally sink an Audi R8 in his pool at home. He isn’t really interested in much else. He lives in his father's villa, squanders his money, and considers himself a bon vivant. Meanwhile, in a dreary high-rise neighborhood in Munich, 15-year-old David lies in bed, struggling to breathe. His mother, Betty, must take him to the clinic immediately. David has been heart sick since birth, and no one can tell him if he will celebrate his 16th birthday. These two worlds collide when Lenny's father, a heart specialist, forces his son to take care of his patient, David: David is mostly familiar with operating rooms, while Lenny knows every club in the city. To make his escape easier, he initially helps David with the simple things.