The Phantom Apartment

Nikita, after a quarrel with his mother, leaves his little sister alone at home and goes out for a walk with friends, but when he returns, he finds himself in a strange place. Now his apartment is home to an aristocrat, Elizaveta Razumovskaya from the 1920s, a girl, Lidochka from the 1970s, and a Ghost from the future. To get back, the hero must realize his mistakes and make a difficult choice: accept being trapped in a ghostly apartment, or help the others find a way out of it.