Song dynasty's first prince Kwai Sing (Ngo Ka-nin) and second prince Kwai Wo (Lai Lok-yi) greedily compete for the throne.Yu Jing (Wayne Lai) and Tung Chiu (Kent Cheng) are responsible in advising each prince.Jing and Chiu are old family friends, having a mentor-friend relationship.Jing's father Yu Pok Man (KK Cheung) brought trouble to the family when his achievements made his advisor feel uneasy.Since then, Jing was separated from his younger brother Yu Tsing (Patrick Tang) and sister Yu Ching (Natalie Tong). sing was deceived into becoming an imperial eunuch, while Ching loses her memory,but fortunately triad leader Fan Chiu Lun (Shek Sau) adopts her and triad member Yim Sam Leung (Kristal Tin) takes care of her.Big villain Yeung Chi San (Joseph Lee) and his sister Consort Wai cause much trouble to get Kwai Wo the throne instead. But, perhaps San and Wai are not the only villains, and there are many others that are much more evil...