Erin jumps at the offer of a cruise with her fun-loving grandmother, Jackie. Plunging into shipboard life, she soon engages with three men on board: wealthy Edward, intriguing "Cardigan Man" and gambler Dwayne.

As they head south, Erin enjoys all the ship offers. Trailed by an odd child, she's unaware that one of the passengers is an assassin receiving orders by phone. Then, while exploring Cabo San Lucas, Erin and Jackie witness a drug-fueled murder. Petrified they return to the ship, sworn to secrecy.

An attempted rape reveals one of Erin's suitors to be a drug-dealing sociopath with a network of destruction and death. During a frightening game of cat and mouse she discovers she is not his only victim. Ultimately, she risks everything, putting herself and Jackie in harm's way in an attempt to save two innocent lives.