Grieving over the loss of her son, a mother struggles with her feelings for her daughter and her husband. She seeks out a ritual that allows her say goodbye to her dead child, opening the veil between the world of the dead and the living. Her daughter becomes the focus of terror. She must now protect against the evil that was once her beloved son.

A psychologist who begins working with a young boy who has suffered a near-fatal fall finds himself drawn into a mystery that tests the boundaries of fantasy and reality.

Each year the population of sleepy Lake Victoria, Arizona explodes from 5,000 to 50,000 residents for the annual Spring Break celebration. But then, an earthquake opens an underwater chasm, releasing an enormous swarm of ancient Piranha that have been dormant for thousands of years, now with a taste for human flesh. This year, there's something more to worry about than the usual hangovers and complaints from locals, a new type of terror is about to be cut loose on Lake Victoria.