During the cold open, delinquents from Mob's school (Salt Middle School) are in a turf war with a rival school (Black Vinegar Middle School). When the rival delinquents are unable to win, they call for their leader, Teruki "Teru" Hanazawa. In spite of being physically unimposing, Teru disposes of the Salt delinquents with ease. In an attempt to garner revenge, delinquent leader Tenga Onigawara attempts to recruit the Body Improvement Club. When they turn him down, he concocts a plan to get Mob kidnapped by the rival school in order to force the Body Improvement Club to attack Black Vinegar Middle School. Meanwhile, Mob has been haunted all day by the weakened spirit of Dimple, who claims to have reformed. The Body Improvement Club members defeat an army of delinquents in an attempt to rescue Mob, but they are similarly unable to defeat Teru once he appears exhibiting his own psychic abilities.