Liz and her daughter Amy move to Hamelin where a dark secret in Liz's past is uncovered by the restless spirit of the Pied Piper, who seeks out those who have gotten away with a crime, and punishes them by taking away their children.

Researchers on the undersea lab Aquatica have genetically altered the brains of captive sharks to develop a cure for Alzheimer's disease. But there's an unexpected side effect: the sharks got smarter, faster, and more dangerous. After a big storm damages their remote research facility, they must fight for their lives.

A freak tsunami traps shoppers at a coastal Australian supermarket inside the building ... along with a 12-foot great white shark.