- Yeung Tai Chi, a new investigator of the ICAC, is met with frequent failures, but he remains optimistic. Chiu Wing Yi, also a new member of the ICAC, is so aggressive that she always challenges Chi. Police officer Yau Lok Sang gets to know Leung Siu Man, who is blind, by change. He is attracted by her optimistic personality and the two become lovers. Though Chi and Yi quarrel often, they manage to discover various briberies and they eventually fall in love. In the course of investigation, Chi is forced to make decisions between love, friendship, family and justice. How will he face the dilemma?