In September 1936, a prominent shipping magnate turns up dead in his luxury cabin aboard the SS Aurelia, a grand ocean liner crossing the Atlantic. Stranded at sea with no escape route, the player assumes the role of an investigator tasked with solving the crime before the vessel reaches port. Five individuals aboard the ship each offer their own version of events from the night of the murder, and the detective must engage them in open-ended dialogue to expose inconsistencies, challenge their stories, and ultimately determine who is guilty. Success hinges on careful observation, strategic questioning, and the ability to catch suspects in their lies before the voyage concludes.