Charge! Men's Private School

Momotaro Tsurugi enrols at Otokojuku and meets the other First Year students. They have to undergo a physical test through a wooden maze just to get to the school itself. Disgusted at the food they receive Togashi Gengi convinces Tazawa Ippei, Matsuo Taio, Tsubakiyama Kiyomi and Momotaro to escape to his uncle's restaurant. Only Togashi and Tazawa make it there, but are also captured, and get to sample punishment by the Otokojuku Spirit Discipline Rod.

he First Years engage in a Forward Marching exercise that takes them through local people's homes and the headquarters of the Pure Evil Group, a local criminal gang which Momotaro overcomes. The group's leader Gokukoji Genzo, sends his son, Hidemaro to seek vengeance on the school and Momotaro. Momotaro defeats their champion and Hidemaro swears to take revenge for his humiliation.

The Otokojuku instructors put the students on a strict, and very unpopular diet so two students decide to raid the kitchen. The Instructors are also concerned about the students forming a union. Momotaro takes the blame for the kitchen raid and is put in the Prison of Penitence. Just as Momotaro's punishment is finished, the Pure Evil Group attacks the school. Togashi Gengi volunteers to take Momotaro's place in the Oil Bath of Hell to appease them and suffers a great deal. He does this in return for Momotaro's help earlier. As Hidemaro and the Pure Evil Group leave they are met by uncle Bro Yasha the Assassin assigned to take revenge. Momotaro beats him, and Yasha suggests that Hidemaro join the Otokojuku to develop his manhood.

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.

Togashi, Tazawa, Matsuo and Hidemaro decide to test Principal Edajima's skills, but mistakenly attack Oni-Hige instead. For punishment Togashi must do the Boulder Bunny Hop. Oni-Hige takes Tazawa, Matsuo and Hidemaro to Rakkyo University where he accuses the students of pursuing pleasure and fashion. He then suggests that they buy and wear traditional loincloths with Otokojuku logos. When they laugh at him, he orders his students to beat them into submission. They are stopped by the manly Rakkyo University Cheer Squad and held hostage for a 1 million Yen ransom. Principal Edajima decides to rescue them himself. He arrives in a tank and destroys the clubhouse, and when confronted by the police, claims that he's making a movie. He beats up the Rakkyo group, earning the respect and admiration of the Otokojuku students. In the final scene he rides off into the sunset on his tank.

Tsubakiyama Kiyomi is having trouble coping with the physical rigor of training at Otokojuku and decides to escape at night with his pet canary. He is intercepted by the Second Year student Oniyokozuna and challenged to a contest. The First Year students are woken by the staff at 4am to witness a Spike Thicket Sumo contest between Tsubakiyama and Oniyokozuna. Tsubakiyama is being beaten badly, but when he realises that Oniyokozuna ate his pet canary, he fights back with a vengeance, and with a little help from Momotaro wins the contest. Later, at the grave of his bird, Tsubakiyama is attacked by other Second Year students. As he is being beaten, Momotaro again intervenes and Tsubakiyama finds his strength and courage. He eventually decides not to leave Otokojuku.