At the beginning of the summer of 1905, representatives of the Socialist-Revolutionary Party Krasilnikov and Elkonen turned to Captain Zhanis Trautman, a Latvian political emigrant living on the outskirts of London, with a proposal to lead a steamer with a cargo of weapons to the shores of Russia. Having recruited a team of old and tried comrades, Trautman changes the crew of an English cargo ship bought by the front men. In the course of the squabble that arose on this occasion, a sailor of the old crew, David Blake, was stabbed. The wounded Blake and the veterinarian Gruber, who accompanied the cargo of anthrax drugs, are forced to leave on board. On the high seas, weapons and explosives were loaded on board. The steamer headed for the Oresund Strait, where a messenger was to meet him.

John Carter is a war-weary, former military captain who's inexplicably transported to the mysterious and exotic planet of Barsoom (Mars) and reluctantly becomes embroiled in an epic conflict. It's a world on the brink of collapse, and Carter rediscovers his humanity when he realizes the survival of Barsoom and its people rests in his hands.