Mubai was reported as a murder suspect by his neighbors because there was often a fishy smell in his home. Police Fang Yansi came to Mubai's home. Mubai's sister, Mu Xinnian, had difficulty using her calves and walked crookedly. They discovered that Mubai was a former dancer, and then one night they discovered that Mu Xinnian was a mermaid...
Mission: Cherish animals, no trade, no harm