The Northern Division of "Mantis Pugilism" select a representative to attend a Kung Fu Competitive. CHENG SUN is so partial and send CHENG -KWONG CHUNG to the competition. KWONG CHUNG knows that KEUNG CHUN PUNK's Kung Fu is better than him and so he refuses. However, CHUN PUNK wants to fulfil CHENG SUN and thus, he let KWONG CHUNG attend the competition. CHENG SUN leads his followers to visit WONG LONG and meet FOK YIU NAM. Conflict arises between the Northern and Southern Divisions. The strength of the two groups are so equal that they respect each other. During the competition, CHENG SUN makes a crafty device towards YIU NAM. NAM is so angry and kills KWONG CHUNG unintentionally. CHENG SUN feels regret on CHUNG' death, thus, he passes the leadership to CH UN PUNK to resolve the conflict between the South and North, CHUN PUNK wants to challenge YIU NAM.… ...

YIU NAM wants to win the rivalry, so , he eats the medicine in advance. Unfortunately, those medicine are too powerful and harmful that YIU NAM die. NAM's followers mistakenly think CHUN PUNK has killed NAM. Only SUK HAN knows the truth. SUK HAN passes away after a twin brother & sister are born. Before she dies, she asks CHUN PUNK to look after her children. CHUN PUNK fears CHENG SUN will hurt the babies, so, he asks WAH SUK takes the babies to Beijing. Ten-year afterwards, the twin brother and sister grow up. They get WAH SUK's Surname, call LAU WAN and LAU YIN. They have a good friend, AH MAN. One day, whilst WAN and MAN are catching crickets, they meet the fugitives LITTLE BUI LAK, CHEUNG LUNG and LEE FU. LUNG and FU intend to kill WAN and MAN but LITTLE BUI LAK resist and let them go. LAU WAN meet CHOI AUG and tell him about LITTLE PUI LAK. AUG goes find him. Meanwhile, MA YEE and the gang arrive.… ...

MA YEE wants to kill LAU WAN and fortunately CHUN PUNK rescue him in time. In the meantime, AUG's reinforcements arrive. MA YEE loss and submits suicide. However, WAH SUK is being killed during the rivalry. CHUN PUNK feels WAN, YIN and MAN poor and destitute, and asks them to go to Beijing with him. CHUN PUNK takes them home. AH NGOR thinks WAN and YIN are PUNK's bastards and quarrels with PUNK. This embarrass WAN and YIN. They also query their relationship with PUNK. Due to different living habits, conflicts always happen between WAN and NGOR. Only LAU YIN and KEUNG CHING of the same age group have an agreeable chat. KEUNG WAI is angry because his cricket is defeated by SIU WING1s one. WING's limbs are broken by WAI. WING's father, SIU SAM bursts his anger to CHUN PUNK. LAU WAN and AH MAN are the witnesses of the issue. SIU SAM forces CH UN PUNK to break KEUNG WAI’s limbs or he will report to the official.… ...

LAU WAN and AH MAN living in KEUNG's home, are always insulted by AH NGOR and KEUNG WAI. They are angry, but keep quite because they appreciate the chance of learning Kung Fu very much. CHOI AUG visits CHUN PUNK and asks him to be his master. CHUN PUNK is impressed by AUG's sincerity. He decides to break the rule and let AUG be his student. LAU WAN asks CHOI AUG to settle the conflict between SIU SAM and CHUN PUNK. Though CHUN PUNK expresses his grateful to CHOI AUG, he still punishes KEUNG WAI hoarsely. LAU WAN begs CHUN PUNK to be his master but PUNK refuses. WAN and MAN therefore, peep at PUNK and WAI while they are play Kung Fu. Unfortunately, it is disclosed by KEUNG CHING. CH UN PUNK is reluctant to tell truth that, it is WAN's mother who do not allow them to learn Kung Fu. So, he promise to teach WAN Kung Fu only if he can firmly sit on a three-leg bench under his attack. LAU YIN is being robbed at street.… ...

Queering LAU WAN being CHUN PUNK's bastard, ‧AH NGOR always makes trouble out of nothing. LAU WAN no longer tolerates and tries to find the truth from CHUN PUNK. PUNK refuses to disclose WAN’s history. He only compare the blood group with WAN to prove that there’s no kinship between them. To repay CHUN PUNK, LAU WAN decides to work at KEUNG IS home for a month. One day, an accident happens when WAN pull the car for KEUNG CHING. Owing to this, they both have a deeper understanding on each other. YUEN SAl HOI holds a Kung Fu Contest and invites many famous guys coming from the crowd. CHUN PUNK is one of them. SAl HOI makes a plan to convince the attendants that he is the real king. Only CHUN PUNK queries about this. VIP TIN SHING wants to take the revenge on CH UN PUNK but he's not in. TIN SHING goes away after he defeats KEUNG WAI. KEUNG WAI is angry about this. So, he hurts TIN SHING together with CHENG SUN.… ...