Gokusen made its sensational debut in 2002, with mega hit 2nd series following in, 2005, and is now returning even more powerful than ever in 2008. Kumiko "Yankumi" Yamaguchi (Yukie Nakama) lives in the world of Yakuzas as the 4th generation heir of Oedo Ikka. She is self-sacrificing to protect the weak, she's tough at fighting, and she firmly believes in the importance of friendship, dreams and family, she teaches and advises punks as a hot-blooded high school teacher.

Her ex-boss, Goro Sawatari (Katsuhisa Namase) now works at Akado Gakuin High School as a vice principal. Although the head director of the school board Ryoko Akagi (Kyoko Enami) speficically orders him to handle the problematic class, 3-D, the punks in the class are too much for Sawatari. Sawatari goes far away to a southern island to find Yankumi, and convince her to work for Akado Gakuin High School to be responsible for the class 3-D. Yankumi accepts the offer, only to find the classroom of punks, where two rival groups of students are always at each other's throats... Will Yankumi's strong belief in students and teaching work this time?