Skipper Steve Conway, safety officer Roger Stone and four student sailors are competing in a 4 day, 600 mile yacht race from Texas to the Gulf of Mexico. But in the dead of night and just 60 miles in, their 38ft yacht, Cynthia Rose, springs a leak and capsizes. What began as a fun-trip has just turned into the men's worst nightmare. Roger and two students are trapped inside the capsized boat, whilst Steve and the other two students have been thrown overboard into freezing shark infested waters. Only five of the six men survive.