A lovelorn pompous knight lashes out after losing a friendly bout with a rival classmate who's also betrothed to the teacher's daughter. Enraged, the estranged knight threatens his own clan who withholds a closely guarded family secret.

After mistakenly helping Chang-qing, the sister of ruthless Mongol chieftain Liang escape capture by Song forces, Mu-bai sets out to make amends by assassinating the Mongol warlord single-handedly.

Fan Chia-soo is a kind-hearted student whose heart is captured by the sweet song of Shen Feng-hsien. However, he is not the only one who has eyes for Shen. The General's henchmen are also determined to present the songstress to their superior as a gift. Fan received help from an unexpected quarter to save the woman he loves.