Sixteen year old Sam lives with his mother Jenny, a hospital nurse, his father having died in Afghanistan. At school he befriends the bullied Oscar and new girl Chrissy, whose widowed policeman father Bill has moved them to be nearer to his elderly mother Margaret, a patient on Jenny's ward. Outwardly amiable and popular with Jenny's patients he wins Bill's thanks for offering to take the blame when Chrissy deliberately starts a fire in the school. However Sam is a deeply disturbed boy, with lethal tendencies, and Jenny is also keeping a dark secret from her son.
—don @ minifie-1