The story of a young, idealistic teacher who enters Shirokin Gakuen in hopes of making a difference in the lives of students. However, Yamaguchi Kumiko is in for a rude awakening when she finds she will be the homeroom teacher of 3-D, the hardest class to maintain in the school. The students have multi-coloured hair and sloppy uniforms and show absolutely no respect for her.
The leader of the class, Sawada Shin,
