Power drags Denji into playing detective at a mountain hotel, fully committed to her favorite anime-inspired routine whether the case calls for it or not. It is the first of four spinoff short stories collected here. The others follow Quanxi and Kishibe on a job nine years into working together, Himeno and Aki's first assignment as partners, and a trip to Enoshima for Denji, Power, and Aki. Each pairs off devil hunters from the Public Safety era of Chainsaw Man for a self-contained case.