A sum of drug money triggers battle of wits between Kwong Yeung (Ma Tak Chung) and Ko Chi (Lau Chung Yan), a detective and a thief. Yeung gradually discovers the true identity of Chi is a mob chief who uses the restaurant business to cover his illegal activities. Despite all efforts, Yeung lacks sufficient evidence to support allegations against Chi. Nevertheless Yeung keeps a close eye on Chi and believes in the ultimate triumph of good over evil. Yeung's devotion to his work sours his relationship with his wife Hong Mei-Lei (Chen Fala). Fortunately, Lei is given support and encouragement by her best friend Bao Yung-Yung (Chan Yuk Lin). Chi is deeply attracted to Yung's kind-hearted personality. He even risks exposing his secret identity to save her life. There is a choice between love and ideal...