The story begins with a Russian spacecraft, Orbit 4, returning to Earth in 1984. Two astronauts, Konstantin and his friend, are on board, but their excitement to return home is short-lived. A mysterious symbiote is discovered outside the ship, and upon their return, Konstantin's friend is found dead, while Konstantin is alive but clearly affected by something.
Dr. Tatiana, a psychiatrist, is recruited by the "Soviet boss" to examine Konstantin. She discovers that Konstantin is hosting an alien symbiote, which comes out at night and feeds on fear. The symbiote has formed a bond with Konstantin, sharing his consciousness and emotions.
As Tatiana delves deeper, she uncovers a sinister plot by the Soviet boss to use the symbiote as a biological weapon. The boss has been feeding the symbiote prisoners, who are mostly rapists and murderers, to control it. Tatiana and a fellow scientist hatch a plan to escape with Konstantin, but they are caught, and the scientist is killed.
In a final confrontation, Konstantin expels the symbiote from Tatiana's body, and they escape. However, Konstantin is mortally wounded and shoots himself to prevent further experiments. The symbiote dies with him. The story concludes with Tatiana adopting Konstantin's abandoned son, giving him a happy ending.
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Here are the key facts from the text:
1. The story begins in 1984 with two Russian astronauts, Konstantin and his friend, returning to Earth after an exploration mission.
2. The astronauts encounter a symbiote, an alien creature, outside their spacecraft.
3. Konstantin's friend is killed, but Konstantin survives and is taken to a super-secret Soviet facility for examination.
4. A psychiatrist, Dr. Tatiana, is recruited to evaluate Konstantin and communicate with the alien creature.
5. The alien creature is found to be living inside Konstantin's body and is responsible for his strange behavior.
6. The Soviet chief wants to study the alien creature and use it as a biological weapon.
7. Dr. Tatiana discovers that the alien creature feeds on fear and cortisol, a substance released by the brain when a person is scared.
8. The Soviet chief is using prisoners as food for the alien creature.
9. Dr. Tatiana and Konstantin form a bond, and she helps him to understand the alien creature's behavior.
10. Konstantin has a son who was abandoned in an orphanage, and Dr. Tatiana helps him to locate the child.
11. The Soviet chief is killed by the alien creature, and Dr. Tatiana and Konstantin escape from the facility.
12. Konstantin shoots himself to prevent further experimentation and to protect others from the alien creature.
13. Dr. Tatiana adopts Konstantin's son from the orphanage.