Based on a comic book called Fung Wan, the movie stars Ekin Cheng as Wind and Aaron Kwok as Cloud. The plot involves two children, Whispering Wind and Striding Cloud, who become powerful warriors under the evil warlord Conquer's tutelage. They grow up serving as his subordinates, but a love triangle and an accident leads to a quest for retribution.

Wind and Cloud find themselves up against a ruthless Japanese warlord intent on invading China.

The film is a spinoff of the original story and the two protagonists Wind and Cloud. The residents of Sword-Worshipping Manor, which houses the best sword-smiths in the world, are brutally massacred after they are alleged to be plotting a rebellion against the government. The young master of the manor, Ngou Kuet, is the only survivor. Ngou Kuet vows to finish forging the "Kuet" Sword, a task passed down by generations of his family which has yet to be completed. Ngou Kuet attacks Tin Ha Wui and battles with Wind and Cloud to obtain the blood of the Fire Kirin which can unleash the power of the sword. As the blood of the Fire Kirin runs in Wind's veins, he becomes Ngou Kuet's primary target.