Nice and Murasaki work as a pair of private-eye detectives using a table in Cafe Nowhere as their office. Calling themselves the Hamatora, the detective duo scramble to solve various cases that come their way on a daily basis. One day, they receive two cases at once: secure a kidnapper and guard a safe...

Yokohamabane High School students Theo and his friend, Rei, come to Hamatora. Their mentor, one of the teacheres, has gone missing, and they ask Hamatora to find him. Nice and Murasaki begin an undercover investigation at the school, but they are about to uncover Theo's secret...

Itou, the director of the Association for the Health, Protection, and Equality of Youths, comes to Hamatora. Itou asks Hamatora to investigate Facultas Academy, which existence is supposed to be classified to the general public. Meanwhile, Art pursues a lead in the Minimum Holder serial murder case involving the Association for the Health, Protection, and Equality of Youths, and encounters a certain individual...

Art summons Honey and Three from Germany in order to hunt down the one responsible for the Minimum Holder serial murders. Upon their re-entry into Japan, the briefcase with Honey's Mighty Script is swapped at the airport with a briefcase containing totem poles...

Hajime and Koneko win an overnight stay at a hot springs resort. They invite Honey and go on a girls' getaway. Left behind, the Hamatora duo and the handyman pair each takes on a new job...

Chiyuu, an illustrator and a friend to Birthday and Ratio since high school days, has been kidnapped. Nashihira, Chiyuu's manager, asked Birthday and Ratio to solve the case. Based on his assertion that Chiyuu knew the kidnapper, the duo visit Misty, Chiyuu's friend...

Hiiragi Shuuji, a ministry of health, labour, and welfare worker, asks the Hamatora to bring in a man manufacturing Ideal in Okinawa. Nice and Murasaki resume going undercover in Yokohamabane High School and go to Okinawa, where they are dragged into a rivalry between the school and a local high school...

Nice shows up at the police station with presents from Okinawa, but is told that Art is too busy to see him. Meanwhile, Honey and Three are told by Art to go on standby because the team on the Minimum Holder Serial Murder case is being reorganized. Just then, a job comes in for the Hamatora, and it concerns Three...

Non-innate Minimum Holders are suddenly running rampant. As Yokohama descends into chaos, the public becomes aware of the Minimum's existence. Then the Outsider, Takahiro, gets out of prison and shows up before the Hamatora, asking them to find a way for him to go back to what he looked like before...

Now that Moral has been finally located, Nice learns the truth from Moral in Nowhere. Meanwhile, Murasaki's coaching of Hajime and Takahiro's weight loss regimen is interrupted by a belligerent group of non-innate Minimum Holders. Seeing Murasaki in action, Takahiro finds himself wanting inner strength...

Yokohama city has been plunged into chaos by Minimum Holders and people wanting Minimum powers. Nice and Murasaki confront Moral, the source of it all. Meanwhile, inspired by Takahiro's bravery, Honey, Three, Ratio, and Birthday move to defend Yokohama.