In the year 80 AMM (After Mickey Mouse) on planet X the crime-syndicated Cats try to erase the Mouse-population once and for all. A scientist of the mice, prof. Fushimishi seems to have found the weapon against the threat - so Intermouse calls it's best, but now retired agent - Nick Grabowsky - to get the plans. As a distraction for the Cats, they also send a second agent - Seargent Lazy Dick - for the mission.

Jancsi Oláh is in the transitional phase between adolescence and adultness. He is born in 1938, and is now getting his first employment as an electronic engineer. On some TV-screens he happens to see a young lawyer, Éva Halk, who arrests his attention. In his imagination she is the most interesting woman he ever saw. Jansci is part of a closely knit gang of young engineers. They see the older engineers as mediocre, and have grand ideas about developing new inventions together. With changing living conditions the five friends start to grow apart. At a party Jancsi suddenly meets Éva Halk. They fall in love, and find common memories in the engagement in The Pioneer Railway at the age of 12. Both of them also chose to stay in Hungary in '56, when many of their friends fled the country. The sudden death of the gang member Laci in leukemia is a hard blow for them all. The fear of death grabs Éva and Jancsi. They start seeing each other as obstacles to their own development, and drift apart.