Lois, Tricia and Sally were sisters and private investigators. They had been brought up and taught Chinese traditional kungfu with chi. Their Uncle Charles, also a kungfu master, was killed in a special way only kungfu people could do. The three sisters set to work to find the killer. As death after death turned up, the manner of the murders connected only with the kungfu world, all the clues pointed to a secret kungfu organization called Black Panther. While the sisters were investigating, they ran into several traps set by Black Panther and almost got killed, hence causing a series of exciting critical conflictions. Once Sally was kidnapped and once Lois got a fatal injury. But she survived in a miraculous way. Since the big boss of Black Panther killed his early-separated twin brother and assumed his identity, and did all the bad things under the cover of good behavior, no one knew his real identity. When the three sisters had an unexpected encounter with two bad masters, Sally was captured in the fight and her life was in serious danger. Therefore, the good masters stepped forward and in the final combat, the masters, good and bad, performed their wonderful kungfu to settle the scores among themselves.