Just as he's about to graduate, senior classman David Easter gets the shock of his young life when a new teacher invents 13th grade in this comedy. Their longed-for freedom threatened, David and his friends set out to make sure they graduate in the expected four years. Meanwhile, a Hollywood star who missed out on high school arrives on campus and develops a strange relationship with the school's 21-year-old principal.
Having just returned from a mission to Mars, Commander Ross isn't exactly himself. He's slowly becoming a terrifying alien entity with one goal -- to procreate with human women! When countless women suffer gruesome deaths after bearing half-alien offspring, scientist Laura Baker and hired assassin Press Lennox use Eve, a more tempered alien clone, to find Ross and his brood. Before long Eve escapes to mate with Ross.
