Honnouji Academy is under the strict control of its student council, led by President Satsuki Kiryuuin. Transfer student Ryuuko Matoi arrives, carrying a scissor-like sword, in search of the woman who killed her father. She believes Satsuki knows the killer's identity, but is defeated by the student council and their powerful "goku uniforms". Ryuuko's fortunes change when she obtains her own "Kamui", Senketsu, giving her an advantage over her opponents.
Ryuko Matoi arrives at Honnoji Academy and faces off with its boxing champion...