A brother and sister are orphaned in an isolated cove on Newfoundland's northern coastline. Their home is a stretch of rocky shore governed by the feral ocean, by a relentless pendulum of abundance and murderous scarcity. Still children with only the barest notion of the outside world, they have nothing but the family's boat and the little knowledge passed on haphazardly by their mother and father to keep them. Muddling through the severe round of the seasons, through years of meagre catches and storms and ravaging illness, it is their fierce loyalty to each other that motivates and sustains them. But soon, even that loyalty will be tested.