Eight years after the events of the first film, Aroostook County, Maine researcher Frank Mills, and his friend Tillman, are collecting specimens at Black Lake, although a crocodile soon pulls Tillman into the water, and kills him. Frank reports this to sheriff James Riley, showing him Tillman's severed body parts. James, Frank, and wildlife officer Emma Warner venture out onto the lake, where they find more of Tillman's body parts. Meanwhile, three friends, Mike, Edie, and Sharon are killed by a crocodile while swimming in the lake. James, Emma and Frank stop at the house of Sadie Bickerman, a woman who has allegedly been feeding the crocodiles, to interrogate her, although she refuses to let them in the house. After they leave, Sadie tricks a photographer into being killed by the crocodiles. James, Emma and Frank go out on the lake again, although a crocodile destroys their boat, forcing them onto shore. A poacher named Struthers and his assistant Ahmad, soon land their plane on the lake, hoping to kill the crocodiles after getting a tip from a local.