Krypton Lake's history of murder doesn't deter counselors from setting up a summer camp in the woodsy area. Superstitious locals warn against it, but the fresh-faced young people -- Jake (Mel Gibson), Samantha (Catherine Hicks), Ben (Tom Hanks), Maggie (Susan Dey) and Nick (Tony Shalhoub) -- pay little heed to the old-timers. Then they find themselves stalked by a brutal killer. As they're slashed, shot and stabbed, the counselors struggle to stay alive against a merciless opponent.