Kiss, an engineer, accompanies his wife to the maternity ward. He wants to leave the woman because while he was away in Brazil, she did not undergo an abortion as they had agreed before. While he is packing up at home, the memories of the sweet events of their life together keep coming to him, one after the other.
This film describes the narrator's childhood, the years before and after the Hungarian Soviet Republic, in a burlesque and fabulous style and with the humour of a child's fantasy.
The family consists of Géza, the father, a comical and inept figure, his wife Paula who actually dominates family affairs, pubertal daughter Kriszta and 12-year-old son Aladár, a child prodigy. The cat Maffia and a dog, Blöki accompany the family. Dr. Máris, their cynical neighbour, is regularly and unvoluntarily involved in disasters surrounding the family.
Archibald est le petit génie de la famille Mezka, il préfère rester seul dans sa chambre pour cultiver son imagination scientifique. Sa sœur le taquine souvent, et cela donne lieu à des joutes verbales dont les adolescents ont le secret. Mais ce que la famille ne sait pas, c'est qu'Archibald profite de ses nuits pour voyager dans l'espace accompagné de son chien Blacky. Le duo de choc monte chaque nuit à bord de la fusée gonflable, découvrant ainsi des univers aussi farfelus les uns que les autres...