In Manchuria during the 1940's, a karate master named Sazaki and hapkido champion Wang make plans to rob the Korean Independence Army of its funds. However, unknown to them, the money is guarded by one Mr Lee--a grand master of taekwondo.

Park Cheol-ho, a Korean who stole Japanese military funds, is captured by Pang, a Chinese who captures independence fighters. Pang hands Park over to Japanese officer Akasaka, who tortures him to find out the location of the stolen military funds. When Park refuses to open up, Akasaka devises a plan to capture his younger sister, Yeong-ran.

A butterfly flies from the mountain to the city. Sang-Kyu, who works in a company, buys a house in the suburbs and lives with his wife and daughter, Yun-Jeong. But Yun-Jeong becomes a somnambulist because of the illusion of a butterfly flying to the house. Sang-Kyu happens to know Mi-Wu, a singer, who loves Song Cheol-Ho but wanders in her life after his death. On the other hand, Yun-Jeong regains her consciousness with the help of an English psychicist and a nun. After Sang-Kyu has a sex with Mi-Wu, he falls out of the window and loses his consciousness. As she feels affection for Sang-Kyu, Mi-Wu becomes a butterfly in the soul world and leaves him.