During a snowy February night in Zagreb in 1983, an unknown man suddenly appears in the apartment of Zorka Vasiljević, a school professor, claiming he has arrived by time machine from the future. His astonishing predictions and disturbing stories about what is yet to come gradually blur the line between the real and the impossible. As she tries to determine whether it is madness, deception, or truth, Zorka is confronted with the idea that the fate of humanity depends on her decisions.