A mercenary assassin versus an unstoppable, mask-wearing psycho.

Ptolemy Lindquist, one of the greatest assassins in the world, is contemplating retirement. Calista, his daughter, wants to celebrate her college graduation with her boyfriend and friends at a popular lake. Thanks to Ptolemy's last assignment and Calista investigating why her boyfriend has been acting sketchy, father and daughter find themselves trapped in a house of horrors by Zebadiah Seeley -- a convicted kidnapper, rapist, and killer recently freed from prison looking to continue his evil ways.