The adventures of Captain Leonid Kortnev and the crew of his ship "Theseus", who against their will found themselves in the 17th century, in the center of rampant piracy - the Caribbean Sea... Leonid Kortnev receives an unusual job offer - as a captain on a patrol ship designed to protect shipping from pirates in the Gulf of Guinea. The terms of the contract are very tempting, but... Having gone through the school of survival in the conditions of the “crab epic” in the Far East during the “shooting nineties”, the captain suspects that something is dirty. And yet, material incentives outweigh, and he becomes the captain of the patrol ship Theseus, on which, under the guise of a security company, a group associated with secret developments in the field of time travel research operates. The Theseus has an installation capable of moving through time. The plan is to send a ship with modern weapons back in time to plunder the galleons of the Spanish Golden Fleet in the Caribbean, followed by a return to its starting point in the twenty-first century. But life often presents surprises that “armchair” strategists are unable to foresee.