This film takes place right after the events of Friday The 13th Part 2. In the midst of chaos surrounding mass killings at Crystal Lake a group of teens and young adults take their carefree attitude to a vacation home belonging to the family of one of the girls. Failing to heed the warnings of a crazy old man with an eyeball in his hand, the group sees no reason to let their vacation be ruined. Along for the ride is an outcast named Shelly who angers everyone around him with his "practical jokes". But Shelly isn't laughing when he loses one of his props, a classic hockey mask, to an unwanted guest with a lake sized chip on his shoulders.