When Terry Griffith loses her high school's writing competition, she's convinced that it's because she's a girl. So Terry decides to change high schools and pose as a boy to prove her point. Her brother, Buddy, helps her pass as a guy so well that she is soon making friends with the boys at school, including the attractive Rick, who becomes her new best friend. But her gender-swapping makes things difficult when she falls in love with him.

A sinister corporation loses control of a house cat infected with a genetically-engineered virus. The death-toll rises during the mutant feline's rampage, and eventually, it finds its way on board a ship of a criminal king-pin.