The main character of the book, Alexander Demin, did everything to ensure that the USSR won that terrible World War II, but the enemy was not asleep, and he was kidnapped. Having managed to escape, Alexander finds himself in a neighboring world. Now he is alone, without money, friends and support, in 1691 on the African continent. He needs to return at all costs. Fights at sea and on land, a lot awaits him while he looks for an opportunity to return.