Rabbit and his mum have moved to the coast to run a small caravan park. Rabbit has been struggling since he saw his father die - he finds it hard to speak. When he befriends a local boy, Joe, Rabbit begins to feel better - but he keeps having strange dreams of a frightened white horse. Hunting for the animal, the two boys stumble across something much more dangerous: a man being held hostage by a criminal gang. Their discovery will set them on a dangerous path that will risk everything Rabbit holds dear.