Billy, a single mother of two, is led into a macabre underworld while her teenage son, Bones, discovers a secret road leading to an underwater town. Both Billy and Bones must dive deep into the mystery if their family is to survive.

Billy, a single mother of two, is led into a macabre underworld while her teenage son, Bones, discovers a secret road leading to an underwater town. Both Billy and Bones must dive deep into the mystery if their family is to survive.