A treasure hunting crew bites off more than they can chew in this underwater white-knuckle thriller. Levi, a British expat diver, has been searching for the wreck of the USS Charlotte for his entire life. Assisted by college graduate Noah, the pair may have finally made a breakthrough in the wreck’s location. When Noah’s college friends visit the group find themselves trapped in the darkness of the USS Charlotte’s interior, air rapidly running out is the least of their fears as they are surrounded by great white sharks.