Erik and Lara are in morning for their daughter, who was born “incompatible with life”. To get away from their suffocating grief and the ever present shadow their daughter has cast in their lives since passing, and desperately trying to recover their increasingly rocky relationship, they take a trip to the Seaside town of Polperro, in Cornwall. But no sooner have they arrived, then they realize that their grief cannot be so easily eluded. Drawn to the waters, Erik and Lara discover a large Devil’s Pocketbook, and inside, the miracle child they could never have. Scylla. Is the young girl a gift from the sea? A dangerous shared delusion? Or something even more sinister? As reality slips away from the couple, they begin to realize they are contending with forces as powerful as the undertows of the ocean, and just as an escapable.