On a scientific expedition in the South Pacific, marine biologist Nazareth Vivas and the crew of the ship Pentokontors discover a mysterious signal in the ocean. While investigating, they are attacked by pirates in search of a legendary emerald. Between betrayals, hidden secrets and a returning past, survival becomes its only mission.
           
   

As Ray fights for his life after a mysterious poisoning, Maximus and his team discover that the island hides Soviet secrets and remains of the MIR station. Nazareth and Jota find a nest of unknown creatures, while America steals the emerald from the box. With the food rationed and mistrust growing, the group's survival hangs by a thread.