This book is a continuation of the first part of “Stone Age Man”. At the end of which its main character, Ang, gains youth and memory of his past. His old friend North, forced to stay on Earth for 6.5 thousand years, discovers that Ang's wife Eva left him a message saying that North has become fabulously rich. There were enough funds to buy and begin to equip the planet, fulfilling the long-standing dream of a colony of aliens living on lease in the 236th sector of the Metropolis. Next, our heroes needed to find an opportunity to leave Earth and fly to the distant Metropolis. To do this, they had to overcome the complexities of interstellar bureaucracy and the machinations of American intelligence agencies hunting for people living longer than their allotted time.