A strange phenomenon has been noticed on the outskirts of our Solar system that quickly approaches the Earth. It's called "Orion's Loop." A spaceship with a crew of people and androids identical to them is sent to intercept the anomaly. But strange events start happening as the spaceship approaches the mysterious loop.

Leonid Bakshtayevas Pavel Belov - Commander
Gennadi Shkuratovas August Goris - Navigator
Anatoli Mateshkoas Mitya Tamarkin - Flight engineer
Liudmyla Smorodinaas Maria Dementieva - Doctor
Yelena Tonuntsas Eya - Alien
Alexei Leonovas Introduction Speaker
Vadim Avloshenko