Events occur in a school run by brute force by the president of the student council ​​Satsuki Kiriuin . The appearance of a new student, Ryuko Matoyi, who owns a sword in the form of a pair of giant scissors, shakes the foundations of the life of the school. Ryuko is looking for the mysterious killer of her father. But on its way become members of the student council. Fortunately, Ryuko finds an unusual speaking school uniform that gives her extra strength.