Coming to Placid Pines is difficult for Tracy, who's brother, Jason, was one of Trevor's victims near the end of the original. When Tracy's nightmares begin to come true as one by one the counselors are murdered. Someone is hunting them through the pitch-black Forest and is determined to kill them all. Could Trevor Moorhouse be back?!

When a crop of doped-up athletes from the Lakecrest College swim team dive into the campus lake to blow off some steam, the bloodsucking leeches below the surface undergo a stunning transformation. After ingesting small amounts of the swimmers' steroid-laced blood, the slimy creatures grow to unusual sizes and set out to sink their teeth into an unsuspecting student population.