In the Ötztal Alps over 5,300 years ago, a Neolithic clan's leader Kelab is tasked with protecting the group's sacred shrine Tineka. When the settlement is brutally attacked, Kelab's wife and son are killed, and only a newborn survives. Consumed by grief and fury, Kelab sets out to avenge his clan, fighting against nature and his own doubts as he pursues the murderers.