Omoikkiri Detective Team Hardgumi

The monster Matenro, who was supposed to be a fictitious entity, actually appears and steals Hiroshi's precious computer. Matenro challenges Hiroshi to win in a battle of wits against him if he wants his computer back. Yasuko couldn't believe what Hiroshi was saying, but she too encountered Matenro, who appeared dashingly in a car of light.

Hiroshi and the five of them form the detective team "Hadogumi" to take on Matenro's challenge. However, as they are elementary school students, they are busy with homework and other things, so it seems difficult to concentrate on their activities as Hadogumi. Just as they are already facing these worries, Ochiai-sensei comes and invites the five to play hide-and-seek. The five people hid under a manhole, but...

Hiroshi and his friends suspect that Matenro's true identity is Ochiai Sensei, and begin investigating Ochiai's background. However, Ochiai is a completely dull man, and even if I'm mistaken, he doesn't seem to be Matenro. Matenro appears in front of the Hadogumi, who are disappointed that their attack has failed. He asks you to come to a Western-style mansion tonight that is rumored to be a "monster's mansion" and steal the treasure, but...

Susumu is about to jump off the roof of a building!? Hiroshi and his friends run to the school, worried that she intends to commit suicide. But Susumu just wanted to fly. Although this commotion ended successfully, information that Matenro appeared at the Space Rocket Research Institute comes in. Matenro dodged the pursuit of the police and flew into the sky!

Today is Hiroshi's classmate Kananari Senkichi's birthday. The five members of the Hadogumi attend a big birthday party held at Senkichi's house, but the presents they prepare are too common and are made fun of. Five people are disappointed. However, at that time, an invisible man appears at the party venue!? He steals the Kananari family's treasure!

Susumu witnessed a housewife, a regular customer of her parents' greengrocer, shoplifting from the store. Susumu tells his father about this, but his father refuses to criticize the housewife's actions. Why is his father silent when his important items are stolen? Susumu, who is not satisfied with this, fasts to show his resistance to his father. However, when he came home one day, something strange happened to his father!?

Satoru suddenly began to wonder how many suckers there were on the octopus' legs. Then Matenro appears and provokes Satoru, saying, "You don't even know about that?" An angry Satoru decides to investigate using an actual octopus, but Matenro steals all the octopuses in Tokyo to prevent Satoru from investigating. What will Satoru do when he is blocked in all directions?

On the way home from school, Yasuko stopped by the botanical garden with Mr. Ochiai. However, Yasuko is disappointed by Ochiai's lack of delicacy. In her heart, a feeling similar to the admiration for Matenro, who always behaved like a gentleman, was growing in her heart. Inspector Karakiri of the Tokyo Metropolitan Police Department appears in front of Yasuko. He was chasing Matenro's crimes.

A videotape was delivered to Hiroshi by Matenro. When they immediately play the tape at the Hadogumi's hideout, they see that it is a criminal notice from Matenro. It is said that he will obtain the "Golden Manju Kannon" at Chikurinji Temple within the day. So, when Hiroshi and his friends asked the Western-Chinese priest of Chikurinji Temple, it seems that the "Golden Manju Kannon" does indeed exist somewhere in the temple...

Hiroshi, Yasuko, and Susumu, who found the "path to the future," disappear. Maybe he was kidnapped by Matenro... While Mr. Ochiai and the three parents were worried, the three in question ended up in the world of 2007 AD. During this period, severe food shortages occurred due to droughts occurring all over the world. Everyone was suffering from hunger.