In August 2007, a 12-year-old girl walking the beach on Jedediah Island, British Columbia, finds a man's sneaker with a decomposing human foot still inside. Six days later, 30 miles away on Gabriola Island, a couple finds a second shoe with another foot, also from the right side, and it does not match the first. Five months on, forest workers on Valdes Island turn up a third shoe, again a man's, again a right foot. Nine months after the first find, a caretaker on Kirkland Island finds a woman's shoe holding a decomposing right foot. Four shoes, four feet, no matches, no bodies, and no obvious link between the locations along the Salish Sea coastline. The film follows the forensic investigators trying to work backward from tide charts, shoe brands, and decomposition rates toward identities, in a case where the physical evidence keeps arriving one disconnected piece at a time. Years on, most of the feet remain unidentified and the shoes keep washing ashore.