The husband and wife Ludva and Hedus Homolkas with their twins Péta and Máta and Ludva's parents - the granny and grandpa - arrive in the snowy Spindleruv Mlýn for a holiday. They promise to each other that they will not spoil the quite expensive holiday by quarrels. If somebody hurts the other one he/she will kneel as a punishment.

Sonya is the heiress to the riches of a Czech noble family—the Hajns. Petr, a social climber marries her, ignoring some shady goings-on—in particular, an insane uncle who prowls the mansion believing himself invisible, a peccadillo the family indulges. The uncle’s stalking every corner of the house, popping out of cupboards and out from behind curtains slowly takes its toll on the young bride.

The Homolka family celebrates a great occasion: they were finally able to buy a car. They immediately begin to drive for small trips to Hradcany, to the airport, and plan further trips. Their euphoria is spoiled by a letter from their great-grandmother. Their great-grandfather is dying and the family is expected to come along to say goodbye. The annoyed Homolkas therefore set off to the South Bohemian village where the grandparents live.