Tsui Wing Pong and Tsui Ka Lap are adopted brothers. Wing Pong was sent to the Tsui family when he was very young because his biological father abandoned the family during a difficult period. Over the years, Wing Pong bears a deep grudge against his biological father, who is the owner of the Yip family bank. At the same time, the Yip family had a dark past and some dangerous secrets.
Lo Chi Kin is the new head of Wing Pong's division at the police station. He has a sister Rebecca Lo Wai Fong, for whom Wing Pong had an unrequited love. Chi Kin and his best friend Yip Sing Hong fall in love with Fong Hau Yung, who works at the bank run by the Yip family and so was she. However, Chi Kin and Hau Yung were forced to give up on each other, due to some circumstances, and Chi Kin ends up marrying Cheung Suet Ying, who is actually in love with Wing Pong's brother, Tsui Ka Lap.
During one murder case, Wing Pong was falsely accused as the murderer and was sent to jail. Following his release, he discovered that his brother, Ka Lap, was the real murderer and was also involved in many other criminal activities. It was later revealed that Ka Lap had the backing of the Yip family to commit the crimes he did. Seeing that there is no other choice, Wing Pong embarked on a dangerous journey to capture Ka Lap and to investigate the dark secrets that the Yip family held, but not without the unforeseen consequences of the sacrifice that the major characters had to make.
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