Toxic Shark is a thrilling horror movie that takes place in Puerto Rico. A group of vacationers experience terror when they encounter a shark that has been infected by toxic waste. The mutant shark attacks anyone who comes near the water, leading to a fight for survival.

In the small town of Franklin, a group of man-eating sharks attack a dam, causing chaos and threatening the lives of the townspeople. A team of experts, including a marine biologist and a dam engineer, must come together to find a way to stop the sharks and prevent further destruction. As the situation worsens and the body count rises, the team must race against time to save the town from these deadly creatures.