A successful "house tuner" in New York City, who calibrates the sound in people's homes in order to adjust their moods, meets a client with a problem he can't solve.
Christian, a reclusive young man from Leipzig, gets a job working the night shift at a big-box store. He's trained to stocks goods and operate a forklift by Bruno, a wistful former truck driver, who introduces Christian to a colorful group of overnight workers, including Marion, with whom Christian develops a troubled infatuation.
Thomas Montgomery, a married father of two young daughters, gets seduced by the world of online gambling and chat rooms where a virtual romance and sexual obsession ultimately leads to the murder of an innocent man.
Violin teacher Anna Bronsky detects remarkable talent in a student, Alexander. Anna becomes obsessed with mentoring him, neglecting her family and spiralling under mounting pressure. As her fixation overtakes her, all is staked on exam day.