On a trip to Dublin to celebrate St. Patrick's Day, four friends agree to spend the night in an abandoned tavern, where they are stalked by an undead killer in search of revenge for a tragedy that occurred centuries before.

After an abandoned 400-year-old ship appears off the coast of a small town, Historian Elena and the local coastguard go to investigate. They discover it is not abandoned and the ship's cursed crew have horrific plans for the intruders.