TYRANNOSAUR follows the story of two lonely, damaged people brought together by circumstance. Joseph (Peter Mullan) is an unemployed widower, drinker, and a man crippled by his own volatile temperament and furious anger. Hannah (Olivia Colman) is a Christian worker at a charity shop, a respectable woman who appears wholesome and happy. When the pair is brought together, Hannah appears as Joseph's potential savior, someone who can temper his fury and offer him warmth, kindness and acceptance. As their story develops, Hannah's own secrets are revealed, her relationship with husband James (Eddie Marsan) is violent and abusive and as events spiral out of control, Joseph becomes her source of succor and comfort.