Follows an archaeologist who travels to Ireland to uncover a long-dead tomb. A threat is released and she will have to fight to keep her teenage daughter from falling under the control of The Morrigan, a vengeful "Pagan War Goddess." A vicious storm isolates the island as Lily, now possessed by the Morrigan – a vengeful Pagan War Goddess imprisoned centuries ago – begins a bloody rampage. Facing betrayal and escalating horror, Fiona must find a way to save her daughter and stop the Morrigan's reign of terror, before it leaves the Island.