The game is set on a 1920s recreational cruise ship. Each player is assigned a quarry, and the object is to murder him or her with nobody watching, while at the same time watching out for, and defending yourself against, your own hunter.A mysterious man named Mr. X has handed out free tickets for his luxury cruise. Little did the passengers know they were falling into his devious trap. All the passengers are required to track down and murder another passenger. If a passenger chooses not to do so, Mr. X will kill him or her.