Spicy teacher Onizuka Eikichi (Sorimachi Takashi) was invited to a beautiful and quaint town in Hokkaido, Horohina, to serve as a substitute teacher in the second-year C group of Hokubunkan Academy for three weeks. Although the time is short, there are many problems. First of all, there are two students with suicidal tendencies. The shy and introverted Ichikawa Raku (Kasahara Hideki) has a one-sided love with his classmate Katsuragi Ayano (Tanaka Reina) and hopes to die; Ayano is isolated because of her identity as a rich girl and feels desperate. Onizuka has solved one problem after another with his unique way of education. On the other hand, female reporter Kitajima Kaoru (Fujiwara Norika) mistakenly regards Onizuka as a wanted criminal and keeps tracking him, which makes Onizuka angry and helpless. The short three weeks passed in a flash, and everything returned to calm again, but it was a little different from the beginning...