Early 60s. The Vostok programme was a Soviet human spaceflight project to put the first Soviet citizens into low Earth orbit. Irina, the astronaut, from a capsule communicates with Nikolai, the radar officer of the monitoring center. The flight is fully automatic and the control panel of the capsule is locked, so contact with Earth is limited to simple ceremonial checks of the vital signs of the cosmonaut. The cosmonaut, due to isolation, insomnia and her own fears begins to hallucinate which will drive her crazy.