Gossip magazine reporter Tong Leung Sing (Sammy) lost his left ear in a traffic accident. After receiving a transplant, he gained the superpowers of a mouse. Leung Sing fabricated fake news for profit and clashed with the righteous policewoman Song Hoi-yan (Priscilla Wong), causing both of them to lose their jobs. Hoi-yan was encouraged by her uncle Ming Kwan-yi (Cheung Kwok-keung) to become a private detective. Leung Sing used his superpowers to spy on the goddess Ming Cheuk-kei (Kate Tam), but was caught by Hoi-yan and forced to help her investigate the case. Gold digger Tong Mei-fan (Kamyn Kong) had a grudge with the rich boy Sui Chun-wai (Chow Chi-kang) and was teased in every way. When Chun-wei was in trouble, Mei-fan helped him regardless of past grudges... Leung Sing used his superpowers to solve the case and gradually became arrogant! At this time, Hoi-yan was shocked to learn the true side of Kwan-yi. Leung Sing helped her but ran out of superpowers and turned into a mouse!