Maruska lives a peaceful cat life with her family. One stormy summer day, a little black and white kitten enters her life and turns everything upside down. Maruska doesn't want to share her home and family just like that, and she doesn't intend to give the kitten anything for free. He gradually softens and tries to teach the kitten proper cat manners, and in the end it is the little kitten who teaches the big cat a lot of important things and also that a cat's life can be anything but definitely not boring.