'Krampus' is based on mythology dating back to 17th century Alpine/Eastern European lore. Krampus is Saint Nicks evil brother. However, unlike St. Nick, Krampus brings wrath on children who misbehave. This story takes place shortly after the demise of Jeremys (A.J. Leslie) family. Krampus has returned to this small community and is seemingly out of control on his quest to punish bad children. Jeremy is brought back to help end the reign of terror that Krampus has brought upon so many towns.