Egor's attempts to change the past by claiming others' hits as his own lead to increasingly unexpected and negative consequences in the future, including losing the love of his life because his interference alters fate, even threatening his girlfriend's very existence.

Egor is in a relationship with Yulia, the daughter of a wealthy oligarch. Their relationship is complicated by Egor's insecurity and pride, as he feels belittled by Yulia's wealthy background and her father's attitude. Egor demands that he must become successful before marriage, which causes tension between them.

Music is central to the story: Egor is a talented musician who works as a karaoke backup singer but dreams of performing his own songs. After discovering a time portal, he uses it to present popular hits from the past 30 years as his own, which drives the plot and his attempts to change his life.

The time portal in Egor's wardrobe transports him back to 1991, enabling him to pass off future hits as his own in the past. This portal is the key plot device that allows Egor to attempt to rewrite his musical career and personal life, but it also triggers the unintended consequences of his actions.

The film shows that any positive changes Egor tries to make in the past result in negative outcomes in the future. His interference with time leads to a loss of love and other unintended consequences, emphasizing that fate resists alteration and that meddling with time can have serious repercussions.