"Twin of Brothers" is set in a period of dynastic change in Chinese history. Wacky wannabe swordsmen Chong and Ling accidentally acquire the mysterious "Longevity Martial Arts", which is rumoured to be the key to a huge treasure. The target of numerous people who covet the treasure, the two friends adventure through China despite the danger. In their journey, Ling meets two girls from two opposing sects, while Chong falls for the sister of the future emperor of China. With their extraordinary experiences, will the two become heroes amidst the historical turbulence?

NIP CHI YUEN (Ma Steven), who works in the anti-smuggling camp, is determined to wipe out the Tau’s Fort, which is the stronghold for salt smugglers. He pretends to be a down-and-out scholar. TAU SING SUET (Yeung Yi), daughter of the chief smuggler, sympathizes with YUEN and puts him up in the village. Later, they even become fond of each other. During an anti-smuggling operation SUET is badly hurt and has since been separated from YUEN and her family. Fortunately she is saved by WU TING HIN (Wong Ho Yin), son of salt merchant WU KIN (Kwok Fung). HIN takes her home. One day, SUET is horrified to see the dead bodies of her parent being hung on the wall of the city tower, and that the official standing on the top of the tower telling the public not to sell smuggled salt is none other than the man she misses day and night. She is heartbroken, and her love for YUEN turns into hatred that moment on...

Happy Go Lucky is a Hong Kong Comedy-Drama starring Kent Cheng.