The cast featured Sergei Zhigunov as Andrei Bruce, Marina Levtova as Belogurochka, Dmitry Pevtsov as Oktin Khash, and Nikolai Karachentsov as cosmolinguist Jean.

[2] An interstellar expedition is sent to study a strange planet called Evur (Evolutionary Aberration), located far from Earth.

After a treacherous attack by the tribal chief Oktin-Khash on the Earthlings’ base, only two members, the ethnologist inspector Andrei Brus and the linguist Jean, survive and are taken captive.

Andrei manages to escape with the help of a native girl, Billegurri (White Swan), and sets off to rescue his friend.

Facing numerous dangers, they uncover the secrets of the strange planet, eventually learning that an advanced alien race had conducted an unprecedented experiment here to merge different epochs of time, though this grand plan ultimately fell victim to the ambitions of the tribal leader.