On a stormy summer morning Edit, the mother of Bánáti children dissapears in the sea at Nizza, where she is on holiday with her family. She is considered to have drowned, only the ten-year-old Benedek keeps on believing that she is alive. Telling a serial tale to his four-year-old sister Benedek makes the little Kata think their mother is coming home in a boat, accompanied by their regular tale-hero Miki Monkey, who is always repeating: mommymommy! The boy suspects that his mother is taken by aliens
and will only be released her when she gives birth to her baby. Dóra, the pretty elder sister complains about her sadness to her friends. Tamás, the father is a violin artist, and keeps playing music all the time, while the grandmother wants to replace the missing Edit immediately by getting a baby sitter, the fat Rizi-Lizi.

In fact Edit was picked up on the stormy sea by a drog-smuggling ship, and put ashore in Algeria. The woman has amnesia, and is taken to an Algerian clinic. A young black doctor does his best to bring her memory back, which eventually happens as she is having the baby. At Christmas Eve the phone is ringing at the Bánáti family?s home: mum is alive.