Comedy of Mismatches begins with widow Sun who single-handedly raises her son Yu Lang (Chin Feng) and daughter Zhu Yi (Li Hsiang Chun). One day, Mother Sun sends her children to the temple, where Yu Lang encounters Hui Niang (Pat Ting). Artist Xu Ya is also at the temple, praying that his daughter Wen Gu (Carrie Ku) will find a good husband. Soon after, Wen Gu encounters nobleman's son Pei Zheng (Wai Mao) and the two fall in love at first sight.

It seems that Li Zhenfei was once an imperial concubine, who often found herself competing with her rival Madame Liu for the emperor's sole, undivided attention. When Li gives birth to the Emperor's child, the jealous Liu switches the boy with a cat and commands a servant named Kou Zhu to kill the baby. However, Kou Zhu ignores the order and gives the prince-to-be to the emperor's brother, a decision which eventually leads to the boy being adopted by the emperor himself! But as fate would have it, to go along with his new son, the emperor has a new wife as well - Madame Liu! As this strange new family unit is being constructed, poor Li Zhenfei has been confined to the forbidden palace, condemned to never see or speak to her son, the prince. But destiny reunites her with her son, but will this family reunion be a happy one? And will Madame Liu finally be punished for her treachery?

Chang Yi plays Chan Chao, a knight of justice, who thwarts the plans of Minister Peng to assassinate the revered Judge Pao Cheng over and over again. Lo Lieh gives Chang a good run for his money as the evil and sinister henchman of Minister Peng.

The husband-and-wife team of Ivy Ling Po and Chin Han returned to another Huangmei Opera classic after Lady General Hua Mu-Lan. Helmed by Chow Sze-loke and written by Chang Cheh, the story revolved around two intellectual siblings, Ching Feng-sheng (Chin Feng) and Ching Feng-hsiao (Ivy Ling Po), who were constantly abused by their stepmother Hsia (Kao Pao-shu). Feng-hsiao was engaged to Li Ru-lung (Chin Han) since birth, but the greedy Hsia forced him to forfeit the marriage. When Ru-lung refused, Hsia framed him for thievery and put him behind bars. To rescue her lover, Feng-hsiao dressed as a young man and went to the capital. She then used Ru-lung's name to enter the national exam and was ranked first place. Impressed by Feng-hsiao, the Emperor decided to let her wed the Princess (Fang Ying). On the wedding night, Feng-hsiao revealed the truth to the Princess...

A mad scientist wants to get his hands on a certain growth-accelerating serum developed by Hong Kong scientist Dr. Li Zong-Hua so that he can create an army of supermen and conquer the world.