In his Scottish New Town home, gangling Gregory and his school-friends are starting to find out about girls. He fancies Dorothy, not least because she has got into the football team - and is a better player than him. He finally asks her …

电影改编自一部半自传体小说，讲述了前监狱管理员Ronnie在英国最危险的监狱长达七年的工作经历，从监狱守卫的视角展现监狱生活。 山姆在伊拉克执行期间负伤，回国后不得已接受了一份在监狱任职的工作，也因此接触到黑暗的监狱文化：贿赂守卫和毒品交易。工作中的暴力和绝望，加上在伊拉克打仗的血腥回忆让他坠入了酒精和毒品的深渊，家人也逐渐…