When young Ricardo leaves the Brazilian town of Recife on an important mission, and sets sail on MV Castle to Ecuador, little does the crew on board know what the journey has in store for them. In a shocking turn of events, the Castle disappears with the Master on board, Captain Rajan Murthy, while the crew is sent back home. Has the ship been hijacked, stolen or simply gone down in the high seas?

Inspector Jose Carlos sets out with his international team of ace sleuths to get to the bottom of the Castle's disappearance. As the plot unravels between Rio, Rizhao, Curacao and Montserrat, the International Marine and the UN Security Council prepare for an eventuality beyond their imagination - a page-turner!