In the academy city of Kivotos, where students commonly carry firearms as part of daily life, a small handyman business known as Problem Solver 68 operates out of a rundown office. The group is run by Rikuhachima Aru, a self-proclaimed outlaw CEO who dreams of building a criminal empire but instead finds herself and her three associates constantly struggling to scrape together enough money to pay their bills. Despite their grand ambitions, they are perpetually broke, and every ill-conceived job they take on seems to only make their financial situation worse. The four girls accept any request that comes their way, no matter how dangerous or absurd, and their attempts to carry out these tasks inevitably devolve into chaotic, explosive comedy. Aru presents herself as a cool and savvy leader, but her pride, ignorance, and sheer bad luck frequently lead the group into ruin. The series follows their daily misadventures as they bumble from one odd job to the next, blowing up buildings, antagonizing local authorities, and leaving a trail of destruction behind them. Over the course of the story, the girls gradually become entangled in larger incidents that reverberate across Kivotos, and the final volume sees them caught up in a major crisis that threatens the entire academy city, forcing Problem Solver 68 to rise to the occasion in their own messy, chaotic style.