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

Matthew Twining
as Stevo

Josh Henderson
as Jason

Stacey Nelson
as Casey

Alexandra Westmore
as Sarah

Michael Lutz
as Spencer

Charity Rahmer
as Sabrina

Maya Parish
as Angela

Stephen Sowan
as Tony

Mark Ian Miller
as Hank

Tyler Sedustine
as Student