Two hundred years have passed since the first telepathic messages were received from the depths of Space. Not all strange visions, saturated with fragments of earthly history, were deciphered; humanity did not have enough knowledge for this. Aliens came to the rescue. Thanks to super-civilization, details of the odyssey of the English captain Peter Shelton became available to earthlings. Brave adventurer Shelton fought the Spaniards and pirates of the Caribbean, overcame the jungles of South America to reach the treasures of the Inca Empire. But what was only gold and precious stones for the navigator of the 17th century became treasures of a completely different kind for the explorers of the 23rd century!