Mladen and Marija are an ordinary and happy married couple of the "middle class" of the society in which they live as tenants. Mladen works as a civil engineer in a state company, and Marija is an English teacher in primary school. The couple finds joy in their only son, Nemanja. They discover that Nemanja has a rare heart disease and healing is possible with an operation in a foreign medical center, which costs €26,000.

A young man who masturbates to porn finally becomes sexually active when his sister brings a female tenant to their flat.