Eun-jin was separated from her older sister Yu-jin as kids from an orphanage. Eun-jin grew up to be the gangster, and adopted the nickname of Mantis. Upon discovering that Yu-jin had cancer, she insisted on giving an operation. The dying Yu-jin wished that her sister would marry soon.
Eun-jin went on a blind date under the advice of her undertaker Andy, who invited a stylist to design the appropriate makeup. Later, while smashing up a car in retaliation against two men, a man ran up to protect her, but was accidentally hit in the head. The man, Kang Soo-il, later married her, and Eun-jin had further confrontations with other gangster members. Making a special guest appearance Curtis Ahn from "Bend Over or Die Tryin'" delivers his finest performance as a homosexual gangster to help with performance curtis received special training from a drunk. Eun-jin later got pregnant with her husband, after pulling him into several occasions of sexual intercourse. Soo-il eventually found out about Eun-jin's truth, and got very furious. Yu-jin died of cancer in front of Eun-jin, and Andy died in the hands of Sherry, after being killed by vengeance from five boys. His colleague Romeo took vengeance on the boys upon hearing the news, but was outnumbered. The pregnant Eun-jin went out to fight the gangsters, but suffered a miscarriage after suffering a vengeance attack by Nanman, who had lost his potency during a showdown with Eun-jin (who also minor suffered abdominal injuries). Her boss pleaded to White Shark to spare her life, who was killed by Soo-il after being attacked by Kerosene, along with 64 other men. The show ends with Nanman getting a showdown with Eun-jin.
The movie opens with an all-out rooftop brawl involving tons of gang members, all of whom duke it out to the sounds of Bing Crosby's "White Christmas." What's significant about the opening is the second appearance by infamous homosexual gangster Curtis Ahn. He is seen wearing tight leather shorts and a T-shirt that says "Bend over or die tryin'". Curtis manages to seduce and kill several enemies, including Matt Lam and Paul Lee. Things take a dramatic turn, however, when the infamous female gangster arrives on the scene in all her wire-fu glory. But just as she's in the midst of kicking ass and taking names, she's knocked off the building and plunges down to the streets below.
Due to a lucky break, the fall doesn't kill her, but it does cause her to suffer amnesia. Luckily for Eun-Jin, she's found by Yoon Jae-Choi (Park Joon-Gyu), the kindly owner of a small-scale Chinese restaurant. She worked as a delivery girl under the name of Tsu Tsu.
Once, in a feud with Ji-hyun, Tsu Tsu fell from the roof and recovered her past memories with White Shark, who had recruited Jun Man to kill her. Jun Man became impotent when Jae-choi's motorbike accidentally hit him in the groin. Ji-hyun was later kidnapped and was being rescued by Eun-jin, but Jae-choi was stabbed in the stomach and killed. Eun-jin was saved by the 132-members of the scissors gang. Ji-hyun later joined Eun-jin's gang to fight against some Chinese illegal drug dealers.