Daniel missed his chance. He wanted to go out with a bang, but instead he's in a psychiatric ward. He was once on top of the world—the Olympic Stadium, 10,000 lighters in the evening breeze. Now he's at rock bottom. The only thing he has left is that damned song that took everything from him. Dr. Lissi Waldstett researches happiness when she's not emptying bedpans in the psychiatric ward. She needs a gimmick, something to grab attention. When Daniel wakes up in her ward, Lissi sees her opportunity and makes him a dubious offer: she'll help him if he helps her. All he has to do is help her make a group of lonely people happy—by singing, of all things. And so, Daniel and Lissi unexpectedly stumble into an adventure. They become entangled, blackmail each other, lose themselves in the group of endearing misfits, and sing for their lives.