Aeris, a shapeshifter of the Wild, steals children from unloving homes and raises them as his own in an enchanted grove deep in the Woods. Under the protective eye of their new guardian, the children absorb the forest's magic and grow more fey-like than human: some of them sprout mushrooms or flowers while others develop scales or wings.

But the reserve of magic that keeps Aeris and his forest home alive is inexplicably running dry. With his life waning and the dangers of the Wild creeping closer and closer, Aeris will do anything to protect his family, even set his hopes on an unlikely new arrival in the Woods: a human stranger.