Humongous

A group of youths shipwrecked on an ominous isle in the Great Lakes, unaware of what's lurking in the woods. Their vacation takes a deadly turn as they're stalked and murdered by a monstrous assailant, whose origins date back to a violent crime that left its offspring, a 35-year-old mutant son, isolated for decades. The group discovers a series of gruesome murders and eerie clues, leading them on a desperate bid for survival against an unrelenting foe.