Vladimir (Aleksandr Domogarov), an influential and wealthy businessman, owns tech enterprises that develop devices allowing users to view hidden aspects of time and reality. Through this technology, Vladimir and his much younger wife, Catherine (Nadezhda Igoshina), begin observing events from the 1920s and 1930s involving a historical love triangle centered on a woman named Felissa Kruut. In the present day, Catherine meets Stepan, a young musician. Catherine's modern romantic life swiftly mirrors the exact historical affair of Felissa Kruut as she engages in a passionate relationship with Stepan. Unable to accept his wife's infidelity, Vladimir attempts to use his technology and power to intervene and destroy their connection.