Eddie Marsan stars in this London-set drama about a troubled former soldier who is taken advantage of by a pair of manipulative teenagers. Lonely fifty-something alcoholic Frank (Marsan) has suffered from post-traumatic stress disorder since returning shattered from his service in Northern Ireland. When he meets homeless teen Lynette (Candese Reid), she quickly fills the void left by Frank's long-estranged daughter, and Frank begins to sober up as his life takes on new purpose and meaning. But Lynette is not all she seems: she has been recruited by her charismatic drug dealer boyfriend Danny (Tom Sturridge) to set up a new drugs den, and has identified Frank as a soft target. Romola Garai co-stars.