Ben Clow's plans are set. Drop off kids, pick up girlfriend, head to the marina, and hop on best friend's cruiser for a weekend of fun at sea. But Ben's happy plans are about to be changed by a tentacled horror that lurks beneath the waves. International crime lords! Deep cover black ops agents! A ravenous, bloodsucking monster! A storm of evil and danger conspire to turn Ben Clow's vacation from a fun ocean getaway into a nightmare of a blood cruise!