A little Dogen Zen priest discovers the seriously injured child CHOR YAT-CHIN lying at their door. His mentor LOK MO-NGAI rescues YAT-CHIN. YAT-CHIN wants MO-NGAI to be his mentor. MO-NGAI finds YAT-CHIN a smart boy. He allows him to stay there but refuses to take him as his disciple. Eighteen years later, YAT-CHIN arrives at Ma Heung Town during the Seven Sister's Festival. The boss of "Bao Ho Mei seizes" the chance to increase the prices significantly. WAN TIN-BONG dislikes it and he plays tricks on them. CHING YING-HUNG, the head constable of Ma Heung Town, learns that The Four Dragons of Ryukyu will be committing crime during the festival. He ambushes at the hill with his subordinates but The Four Dragons of Ryukyu have already robbed Tai Tung Bank and they even capture the villagers as their hostages. YAT-CHIN hides in the crowd. YING-HUNG and his subordinates surround Tai Tung Bank.… ...

FUNG NGAN dies in the prison. YING-HUNG believes that FUNG NGAN has committed suicide but YAT-CHIN doesn't think so. FOON HEI goes to the back side of a shadow play screen and she plays a pair of shadow butterflies. When seeing the shadow butterflies, YAT-CHIN recalls the time when he tried to escape with SHEK from a Liar Group but they were discovered eventually. WAN TIN-BONG discovers that FAVUS BOY is holding a blood-stained knife. He suddenly sees a scene of "Divine Secret" and realizes that he should help FAVUS BOY to escape. The waiter at Butterfly Restaurant believes that TIN-BONG has killed their Mayor. SAI CHIU and the other constables arrive to chase after TIN-BONG. They decide to give up when arriving at Kau Lau Village. TIN-BONG returns to his workplace at Chun Fa Bathhouse. His lady boss CHUN-FA finds him abnormal. The Deputy Mayor and the tycoon in town WOON TIN-SANG go to the Yamen to pressure YING-HUNG.… ...

FOON HEI agrees to help YAT-CHIN entering Kau Lau Village. After rescuing others, TIN-BONG keeps seeing butterflies and he is worried. YAT-CHIN disguises himself and enters East Kau Lau Inn. BIG TWIN recognizes that he is a foreigner and brings him to the entertainment venue. SIU-HING and SIU-YUK serve YAT-CHIN enthusiastically. However, the subordinates of East Kau Lau's leader PAK YAT-YAT discover that YAT-CHIN is not a foreigner and they chase after him. The Four Scallion Sisters rescue YAT-CHIN and bring him home. FOON SHU asks him to hide away in their place first. YING-HUNG learns that YAT-CHIN has entered Kau Lau Village secretly and he decides to fire him. YAT-CHIN runs away to Pleasure House. SIU-HING and SIU-YUK rescue him. YAT-CHIN learns that TIN-BONG is the suspect and he goes to arrest him at the bathhouse.… ...

Eighteen years ago, TIN-BONG rescued YAT-CHIN and he put him outside the place where the Dogen Zen priests lived. TIN-BONG was trying to kill LAW KEUNG but he discovered that LAW KEUNG had died already. He then saw a scene of "Divine Secret" that CHAN AH-SUM who queued up behind him would die. TIN-BONG didn't know what to do. He followed the butterfly all the way to Chun Fa Bathhouse at Ma Heung Town and he begged the lady boss CHUN FA to hire him. FOON HEI goes to East Kau Lau Inn alone to apologize to PAK YAT-YAT. She requests to give her three days to capture YAT-CHIN. FOON HEI tries to meditate like YAT-CHIN and she suddenly discovers a way to keep contact with him. YAT-CHIN and TIN-BONG go to Lau Toi together. TIN-BONG discovers FAVUS BOY and YING-HUNG discovers TIN-BONG. YING-HUNG and his subordinates surround TIN-BONG. YAT-CHIN reveals that they will know that TIN-BONG is not the murderer when they find FAVUS BOY.… ...

Master PAK from Kau Lau Village sends a golden pig to East Kau Lau to tease YAT-YAT for not able to capture YAT-CHIN. BIG TWIN and LITTLE TWIN suddenly arrive with gifts to divert YAT-YAT's attention so that the Three Scallion Sisters can rescue FOON SHU. FOON SIU successfully abducts YAT-YAT but YAT-YAT's son HOK-YEE ruins her plan. All the Three Scallion Sisters are captured. FOON HEI misses her three sisters and FOON SHU. She cries while eating butterfly biscuits. YAT-CHIN reveals that he understands her. In order to gain control of the whole Kau Lau Village, Master PAK colludes with the Deputy Mayor and TIN-SANG. When Master PAK is gone, TIN-SANG meets up with TAI-PING. TAI-PING is TIN-SANG's younger brother and he helps TIN-SANG to commit crimes secretly. YING-HUNG investigates the dead body of the Mayor and he discovers something suspicious.… ...