Kiera Drago, president of The Nine Dragons Syndicate, disbands it for Lucian Landon's wish, becoming homeroom teacher of the worst class. Faced with mischievous students, Kiera intimidates and establishes authority. Students prank Kiera, but she foils them. Kiera uses gang ways to help students comprehend lessons. To spite Kiera, students cause a crisis in the laboratory. Kiera rescues them.