Chi, a new investigator of the ICAC, was met with frequent failures, but he remained optimistic. Yi, also a new member of the ICAC, was so aggressive that she always challenged Chi. Though they quarreled often, they managed to discover various briberies: Sales representatives stole cars to cheat on insurance; school principal and accountant swindled students out of their money; doctor stole drugs from hospital and sold it to medical company; police took bribe to protect triad members; and contractors bribed government officials to turn blind eye to their work. In the course of investigation, Chi was forced to make decisions between love, friendship, family and justice. How would he face the dilemma?