Iona returns to the island where she was born with her teenage son to seek refuge from a violent crime in Glasgow. Iona's return exposes her tormented son, Bull, to a way of life she rejected when she left the island and sends a shockwave through the family she left behind.

Iona returns to the island where she was born with her teenage son to seek refuge from a violent crime in Glasgow. Iona's return exposes her tormented son, Bull, to a way of life she rejected when she left the island and sends a shockwave through the family she left behind.