Lucas (Mads Mikkelsen) is beloved by his students and fellow teachers at his local kindergarten. After a divorce, made especially painful when his wife moved away from town with their teenage son, Marcus, Lucas' life is recovering with a new girlfriend, and the reforging of his relationship with Marcus. His world comes crashing down, however, when a young girl in his class accuses him of inappropriate behaviour. It's a simple lie that spirals out of control and the small community suddenly finds itself in a collective state of hysteria. Long held friendships are tested as mistrust takes hold, and Lucas must summon all his strength in a brave fight for his life and dignity.