During the final months of the World War II, a group of special forces sailors, under the command of Lieutenant Balandin, receives a secret order of special importance to destroy enemy tankers, seaplanes and gun installations to ensure the free landing of their troops.

The heroine of this story is a simple girl from Odesa named Tonya Chumakova who dreams of the sea. And so she is hired as a radio operator on one of the ships of the Black Sea whaling fleet...

Humans on spaceship named "Tantra" are exploring the unknown part of the Universe. The spaceship gets trapped by the mysterious Iron Star, and the Iron Star's powerful force of gravity is to hold the spaceship for 20 years. The humans are facing a very tough survival challenge.