A young female student of music finds herself in a Dalmatian town in order to practice organo playing in the local church, and there she falls in love with a timid young man who helps her with it.

The subject is the contrast between old and new Split. Journalist Duje lives in a new apartment in a large green skyscraper, but his heart is drawn to his childhood, where he meets old neighbors and for a short time experiences their sorrows and joys, witnesses their quarrels and misunderstandings, but also moments of togetherness and solidarity. Most of the action takes place in the common yard where the neighbors meet at every opportunity. The sudden illness of old Domina brings excitement into their lives and creates unusual complications that will bring changes to the peaceful everyday life of these good-natured people.

While carrying the red flag and dynamite all the way up to the church tower, Niksha negligently draws the agents' attention. This prevents him and his female companion Vjeka to leave the tower. Until the morning of May 1st, which brings the highlight of a red flag flying over the occupied Split, Vjeka and Niksha spend the night of their long-awaited rapprochement.

Two neighbors quarrel through the hole in the wall which connects their bedrooms.