In Shanghai about the 1930s, Ho Tao (Gordon Liu) is a Kung Fu student. His rich father has set up an arranged marriage for him with the daughter of a Japanese business associate. Ho Tao initially objects and feigns illness, but soon thereafter agrees to the marriage when he finds bride to be, Yumiko Kōda ("Kung Zi" in Mandarin), is attractive. After the wedding, he finds out that she is also a martial arts. Ho Tao finds her style of Karate to be violent, unladylike, and potentially immodest and tries to persuade her to learn feminine but also effectual styles of Chinese Kung Fu. She is later offended during an argument over which nation has the superior martial arts styles and eventually goes back to Japan. When he travels to Japan to entreat Kung Zi to be reconciled with her husband, Ho Tao's father finds Kung Zi in training by her childhood friend and rather too attentive martial arts sensei Takeno.