Lin Yi is reborn as a black-and-white cow cat, named Marshal. He leads a patrol team of cats and dogs on wonderful adventures between Gangcheng and Haicheng. He rescues the stranded white cat Snow White, finds a lost Ragdoll cat, outsmarts a gang of cat thieves, and protects a mother South China tiger and her cub. As a cat, Marshal acts bravely to help others, weaving a heroic legend in the animal world through small daily adventures. In the end, he uncovers the secret behind humans turning into animals.