The peace of the residents of a tenement house in Warsaw's Mokotów district is disturbed by the appearance of the alleged legal owner of the building. By applying ruthless methods, the man begins to force more families to move out. The most determined in the fight for the right to her apartment is Janina Markowska (Sławomira Łozińska). The woman is not going to leave the house where her family has lived for over 70 years. However, when the facility becomes empty and Ioannina mysteriously disappears, the police begin an investigation. They are run by the officer at the head of the special group - Anna Szerucka (Irena Melcer). Subsequent clues lead the officer to the trail of an intrigue in which politicians, agents of the former services and high-ranking members of the bar are involved. An unequal struggle with the system begins, the stake of which is the lives and rights of the inhabitants thrown onto the pavement.