When headstrong Merrin, trapped in the rhythms of her family's mussel-picking trade, stumbles upon a mysterious hagstone, she unwittingly sets off a chain of events that challenges her family ties, and the unseen forces shaping their mundane lives.

Chaos strikes a small-time organ transit company, when a mix-up leaves one man dead and another dying. The team must navigate through this nightmare scenario, to find out who is responsible. Or at the very least, someone to blame.