In 1970s Moscow, a somewhat eccentric inventor named Boris Grushanov creates a time machine in his small apartment. One day, while in a fight with his neighbor, he accidentally activates the device, and suddenly, he finds himself face to face with none other than Ivan the Terrible, a 16th-century Russian czar. Confused and terrified, the figure from the past realizes he has been transported to an unknown future, filled with modernities and absurd situations.
Meanwhile, the invention causes chaos in Grushanov's home, and to make matters worse, the inventor's mocking friends are witnesses to all this mess. Ivan, trapped in the modern era, decides to make the most of his new life but quickly realizes that the rules have changed and that his authority no longer intimidates anyone. Unsure of how to return to his time, he embarks on a series of hilarious adventures that blend tradition with the pop culture of the 1970s.
Alongside the clumsy scientist and his friends, Ivan tries to adapt to contemporary life, facing comedic situations that challenge authority and power. But in the end, what seems to be just a twist of fate also sparks reflections on leadership and identity. With clever humor and a witty script, this story becomes an unforgettable journey through time, leaving the audience both laughing and contemplating.