Personal diving instructing team Sebastian (Chris Carmack) and Dani (Laura Vandervoort) are hired by a rich entrepreneur (David Anders) and his martial artist girlfriend Azra (Marsha Thomason) to search below the waves for a mythical sunken ship Sebastian's been hunting his whole life. Unfortunately, they're really after two mysterious boxes dumped into the briny during a Coast Guard search. And if they don't find them they'll all be fish food. Sequel to the 2005 sun'n'sand original with Paul Walker and Jessica Alba.