Xia Bing and Duan Yanqiao are skilled martial artists who catch thieves for a living and are nicknamed the "Female Constables." They meet Zhu Wanwen and Qiu Lin and become allies. However, they face challenges as the libertine Kang Tinglie appears, and the mysterious organization Shanliuhui closes in. What impact will this have on the Female Constables?
Yang, a thief, witnessed his adoptive father's murder and vows to avenge his death after stealing a jade buddha with Hong. He meets Mu, who helps him escape from the authorities and they fall in love. Yang has a change of heart after meeting Da Mo and works to stop Mu from taking the throne.
The Red Flower Society infiltrates the Qing court, and Emperor Qianlong goes to Jiangnan disguised as a commoner, where he meets and takes in Kong Kong as a maid. They meet Fang Shiyu and are introduced to the leader of the Society, Han Tianchou. With the help of the White Browed Taoist and others, Han intends to overthrow the Qing dynasty, and Qianlong must investigate. Meanwhile, Muslim princess Ma Xianglei seeks Han's help to retrieve the Quran stolen by Qianlong. Xianglei and Qianlong develop mutual feelings, and so do Shiyu and Kong Kong, but they face many obstacles. Ultimately, Qianlong succeeds in dismantling the Society, but Xianglei is murdered. The culprit incites more conflict to harm Qianlong, who vows to avenge Xianglei by finding the true killer.
Lam Sai Wing (Lo Hoi Pang) was an apprentice of the legendary Master Wong Fei Hung. Because he had killed too many during his lifetime, he was delayed from reincarnation, and his soul was somehow trapped inside a high school. A group of wealthy students, Chui Man Kin (Edward Mok), Sze Chun Nam (Sunny Chan), and Tsang Chi Sing (Cheung Kam Ching) were upset about the greedy behaviors of the school mistress, Liu Wai Chu, and the disciplinary counselor, Au Yeung Hip Sing. The students played tricks upon them, and accidentally led them to death. Seizing this opportunity, Wing returned to life after entering into the teacher's body. Without any experience as a teacher, Wing created a lot of trouble, and made the entire school livelier. As the school atmosphere improved, Hip Sing's soul returned and demanded to return into his own body.