"Cat Ninja", created by the original team of "Cat Service", is the world's first "Cat Ninja" action film. Yang Yan is an idle young ninja, and his people believe that he knows the whereabouts of the legendary file. According to legend, there is a record of cosmetic techniques that can help soldiers win. He took his "father" with him, a fat cat with a golden hair and a red nose. Yang Yan believes too much that this fat cat is his deceased father, the legendary ninja Jianshan, because the fat cat has exactly the same red nose as his father. At the same time, in order to get the file as soon as possible, the clan elders sent two female ninjas, Hongye and Yan, to catch Yang Yan. And Yang Yan, in order to make her father look human, began to keep cats from people's eyes and ears.