Needy is a reserved bookworm. Her best friend is Jennifer, a conceited cheerleader. The two share little in common. They share even less in common when Jennifer mysteriously gains an appetite for human blood after a disastrous fire at a local bar. Soon, Needy's male classmates are steadily killed off in gruesome attacks and she must uncover the truth behind her friend's transformation and find a way to stop the bloodthirsty rampage before it reaches her own boyfriend.