A luxury cruise ship, a chilling nursery rhyme, and a deadly secret that threatens to capsize the voyage of a lifetime. When Gianni Bertini and his partner Olga embark on a four-month world cruise, they're hoping for relaxation and adventure. But their journey takes a dark turn when they meet Rocco Montalbano, a charismatic figure who reveals himself to be a powerful 'Ndrangheta leader. As passengers begin disappearing one by one, a macabre nursery rhyme counting down the deaths echoes through the ship, mirroring a real-life mafia feud unfolding on board. Gianni, fascinated by Rocco's complex character and the dark undercurrents of the 'Ndrangheta, begins documenting the events. But as the body count rises and the mystery deepens, he finds himself entangled in a dangerous web of secrets, where loyalty is fragile and survival hangs in the balance.