John Brock is a down-on-his-luck archaeologist who returns from an expedition to the caves of rural Kentucky after unsuccessfully trying to locate a mysterious relic that his family has sought…

Bryce is ready to propose to Madison while they visit her family for Christmas. However, the spontaneous wedding of Madison’s sister Harper throws Bryce’s perfect proposal plans into a tailspin.

After chomping through the fish population, thousands of starved lampreys begin attacking the citizens of a sleepy lake town, and the community scrambles to stay alive.