With only two weeks until college graduation, Casper still lives with his mother, is indecisive to a fault, and is one credit away from failing. Just when he thinks things couldn’t get any worse, he and his friends accidentally unleash a curse that turns people into zombie demons — a.k.a. Zemons! Arming themselves with homemade weapons, Casper and his hapless pals must race into the night, killing Zemons while frantically searching for a way to reverse the curse.