British coming-of-age drama, set in a Yorkshire mining town during the 1970s, about two young girls from different social backgrounds who become friends. Tomboy Mona (Nathalie Press) lives with her God-fearing ex-alcoholic brother Phil (Paddy Considine) and dreams of fixing up an old moped she has bought for only ten pounds. Spoilt rich kid Tamsin (Emily Blunt) wants to escape from her dreary surroundings as well, and when the two girls meet up on the Yorkshire moors, they begin an intense, emotional friendship. When Tamsin discovers that Mona wants to see Phil back the way he was before he found God, she decides to do whatever she can to make him revert, with tragic consequences.