Princess Zlata is 4 years old, Princess Vasilisa is 12, their father is a science fiction writer, princess mother works as an accountant at school. Together with them live the British cat Fifa and three gerbil mice - Bagel, Jerry and Chipmunk. Or rather, they used to live. One day, three brave mice grew old and went to a mouse heaven full of corn kernels, belly massages and wonderful running wheels... And Zlata and Vasilisa’s dad remained the only man in the family. Now his task is to survive among the princesses.