The mysteries of the Sargasso Sea, or the Sea of ​ ​ Lost Ships, have been stirring people's minds for decades. The crew and passengers of the ship "Mara Corday," heading to French Guiana, changed their luck, and they turned out to be prisoners of a mysterious fog, which transferred them to the edges where the laws of physics and representatives of the local exotic fauna are not averse to eating human meat. Unsuccessful sailors will have to face not only sea monsters and natural anomalies: in the fog they will face something much more terrible, contrary to human logic. Surrendering to the fight against hostile reality and their own fears, driven only by the hope of returning home, the heroes sail towards the unknown, trying not to lose the most important thing - humanity.