"Hilary" (Olivia Colman) is the shift leader at a grand old cinema living a routine life and largely just going through the motions each day. When the young "Stephen" (a strong and engaging performance from Micheal Ward) arrives, she takes him on a tour of the building and that takes them to the upper echelons of the building - now disused - where they discover an injured pigeon. They also discover something else, and soon are having bit of a clandestine affair. Thing is, she's also having one of those with her boss "Ellis" (Colin Firth) and keeping secrets amongst her small team isn't the eas...