Ren lives alone on the remote frontier of a country devastated by a coup. High on the forested slopes, she survives by hunting and trading - and forgetting. But when a young soldier comes to the mountains in search of a legendary creature, Ren is inexorably drawn into an impossible mission. As their lives entwine, unravel and erupt - as myth merges with reality - both Ren and the soldier are forced to confront what they regret, what they love, and what they fear.