Chaos reigns in the sleepy village of Aramoana on the New Zealand coast, when a series of shipping containers wash up on the beach and looting begins. Detective Constable Sam Shephard experiences the desperation of the scavengers first-hand, and ends up in an ambulance, nursing her wounds and puzzling over an assault that left her assailant for dead. What appears to be a clear-cut case of a cargo ship running aground soon takes a more sinister turn when a skull is found in the sand, and the body of a diver is pulled from the sea - a diver who didn't die of drowning. As first officer at the scene, Sam is handed the case, much to the displeasure of her superiors, and she must put together an increasingly confusing series of clues to get to the bottom of a mystery that may still have more victims...