Pippa and Thomas move into their dream apartment, but notice that their windows look directly into the apartment opposite. This will set in motion a chain of events that will lead to disaster.

A musician helps a young singer find fame as age and alcoholism send his own career into a downward spiral.

Solène, a 40-year-old single mom, begins an unexpected romance with 24-year-old Hayes Campbell, the lead singer of August Moon, the hottest boy band on the planet.

A pair of childhood friends and neighbors fall for each other's sons.

Composer Peter Bretter (Jason Segel) is in a five-year relationship with actress Sarah Marshall (Kristen Bell), who stars in a ''CSI: Crime Scene Investigation''-like television show titled ''Crime Scene: Scene of the Crime''. One day, as Peter stands stark naked in their apartment, Sarah announces that she is breaking up with him. Devastated, and unable to banish his grief through one-night stands, Peter takes a trip to Hawaii. However, the vacation is ruined when he learns that Sarah and her new rock star boyfriend Aldous Snow (Russell Brand) are also guests of the resort. Taking pity on him, hotel concierge Rachel (Mila Kunis) offers him an expensive suite for free in exchange for cleaning up the room himself.