Instructor Oni-Hige is seen of harassing a woman in the Roppongi district, and is beaten up by George, her huge American boyfriend. For revenge, Oni-Hige then sends the students on a purifying mission in the Roppongi district against dominating foreign men. They find the huge American in a discotheque, but the students find excuses not to fight him, and Oni-Hige is beaten up again. The next day, instructor Rankiryuu orders Hidemaro Genzo who is now a student, to purchase make-up in Roppongi. Meanwhile, the students are punished by having to hold a handstand position for an hour. Hidemaro sees the Americans scamming a local shop assistant and confronts the former WBB heavyweight boxing champion J.J. George but is easily beaten up. The students decide to take revenge, and using a combination of karate and kenpo, Momotaro beats him up. When Yoko, George's Japanese girlfriend, abandons him and approaches Momotaro, he rejects her for being fickle. Note: When Togashi is instructed to translate Japanese in the discotheque, he just shouts some common English phrases that he knows.
Ken Yamaguchi
Togashi Genji
Yusaku Yara
Toramaru Ryuji
Minoru Inaba
George, J.J. (voice)
Koji Totani
Umanosuke Gonda
Banjo Ginga
J
Ikuya Sawaki
Onihige
Katsuji Mori
Gouji Akashi
Keaton Yamada
Baron Dino
Hideyuki Hori
Momotaro
Daisuke Gori
Edajima Heihachi
Ryoichi Tanaka
Rankiryuu
Juji Matsuda
Matsuo Taio
Yumiko Shibata
Yoko
Shozo Iizuka
Raiden
Hideyuki Tanaka
Daigouin Jaki
Kazuhiro Nakata
Tsubakiyama Kiyomi
Noriko Tsukase
Hidemaro Gokukoji
Keiichi Nanba
Hien