Continuation of stories about an intelligent cat who is always friendly and always wears a bow tie. Two mice, Gray and White, constantly give Leopold a lot of trouble. But no matter what they come up with, all their attempts end in failure. And even in the most difficult moments, when, it would seem, there is no salvation from mice, the cat Leopold does not get tired of repeating the motto of his whole life: “Guys, let's live together!”.

Leopold the Cat caught a golden fish while fishing. She is ready to grant him any wish, but he lets her go and asks for nothing in return. Then the mice appear.

Leopold the Cat undergoes a medical examination at the clinic. The mice try to sedate him and give him an injection.

After another trick of mice, Leopold the Cat is visited by a dog doctor who prescribes him to take Ozirin to help him deal with mice. But Leopold doesn't follow the instructions and instead of taking one pill, as written in the prescription, he intakes the whole thing at once and goes wild.