The haunted season has arrived in the Antler Wood. No fox kit is safe. When Mia and Uly are separated from their litters, they discover a dangerous world full of monsters. In order to find a den to call home, they must venture through field and forest, facing unspeakable things that dwell in the darkness: a zombie who hungers for their flesh, a witch who tries to steal their skins, a ghost who hunts them through the snow . . . and other things too scary to mention.