Liba celebrates her birthday every year with her family. A big family celeberation is everything for her. But her son Peter has a different plan this year. He wants to celebrate for the first time birthday with his boyfriend Robert, who is a long-hidden secret to the rest of the family and whose birthday is actually on the same day. But Líba is not about to give up on her family celebration and decides to go with the whole family to see Peter. After the unexpected visit, Peter pretends to be in a relationship with Robert's sister Veronika and turns him into a work colleague. And to make things even worse, Veronika's children disappear and the whole family decides to look for them. The story of one crazy birthday celebration.