Friends Alexandra, Edvin, Dushan and Tindra have graduated from sixth grade and have big plans for their summer vacation. But in each direction they all go through different difficulties and nothing turns out as they have imagined.

It has come time for Dushan to pack and go to his sick grandmother. Alexandra and Tindra start planning how to celebrate Tindra's birthday. They will go to the fairground together! But when Tindra's mother hears about their ideas, she firmly says no.

Tindra tries to hide from her friends that her mother has said no to the gang's birthday plans. Alexandra understands that something is not right and tries to find out what happened.

Dushan calls Alexandra and is sad. His grandmother will not live much longer. Edvin and Alex continue to forge plans for how to get money for Tindra's birthday. Tindra finds it increasingly difficult at her mother's house, while at the same time she notices that the friends are behaving strangely.

Tindra is angry because no one talks to her. Why do Alexandra and Edvin stay away and why are they so secretive? Alexandra has agreed to carry out Edvin's risky plan - to steal the neighbor's energy drink. But their nocturnal excursion takes an unexpected turn.

Alexandra's mother is furious when she exposes Alexandra's lies. At the same time, Edvin and Alexandra have a secret together, which they wish they had escaped carrying. In the end, it fails for Alexandra and she can no longer keep everything inside.

Dushan is back and meets his friends again. Tindra is still down and Edvin and Alexandra decide to tell them why they have been acting so strange lately. Another happy surprise awaits Tindra at home.