A group of friends get lost in the seedy streets where they encounter a crazed gang of homeless derelicts that seizes them and kills them one by one. The surviving man escapes on foot, naked and unarmed, with a pack of depraved transients in pursuit, and only seconds away from capture.

A tropical singles retreat takes a terrifying turn when guests realize a poisonous shark is infesting the surrounding water. Not only will it rip apart its victims, but it also uses projectile acid to hunt - in and out of the water.