The story takes place on a luxury cruise ship across the Atlantic Ocean. Passengers dream of their own gold rush and travel from Europe to South America, hoping to dig out their brilliant future there, including sisters Carolina (Ivana Baquero) and Eva (Alejandra Onieva). A murder broke the tranquility of the journey. If a murder occurred on such a ship that is equivalent to a secret room, it means that the murderer is among the passengers at this moment. Strangely, the name of the victim did not appear on the passenger list, and all the passengers on the ship also said that they did not know the victim. As the investigation deepened, more and more mysteries were discovered, and each passenger had their own secrets.