One battle contract

The moon, which has been rotating around the Earth for millennia, is an artificial satellite built by creators, a highly developed race of space tramps using planets as industrial bases or incubators to grow biological organisms of various types. A long time ago, such an incubator existed on Earth. But something did not suit the owners, and they forever left this sector of the galaxy, leaving the Biorgs that had entered the planet and the orphaned station that were hanging on the planet, considering it too much to destroy absolutely everything.
The Russian astronaut Semen Lisitsyn will find out about this, visiting the bowels of the moon, ships of the creators and other planets