Satsuki announces her new election system in which students must survive a seven-day battle against each other in order to stand out on top and earn Goku Uniforms, sending the entire school into a state of emergency. Meanwhile, Ryuko takes Mako to the ruins of her old house, where she tells her about the circumstances surrounding her father's death. Finding no further clues in the basement where she found Senketsu, Ryuko and Mako head home, only for their scooter to run out of gas. They end up encountering the disciplinary committee chair and one of the Elite Four, Ira Gamagoori, who, having just attained his driving license and is taking the week off, offers to take them to a gas station. During their drive, they are attacked by the automotive and airsoft clubs, who are targeting Ira's Three-Star Goku Uniform, Shackle Regalia. Recalling how he first met Satsuki, Ira unleashes his uniform, which uses the power of masochism to evolve into Scourge Regalia and lay waste to his opponents. After a week passes, Honnouji's strongest assemble for the Sudden Death Runoff Election, with only Ryuko and the Elite Four making their way to the top. There, Satsuki challenges Ryuko to defeat each of the Elite Four in exchange for details concerning her father's death, her first opponent being Ira.