The Matsuno brothers try to adapt their show to contemporary times, with mixed results.

The Matsunos are invited to Hatobou's birthday part. Meanwhile, Iyami discovers that his buckteeth contain a rare metal.

Captain Choromatsu waits a man while he carries out a murder case investigation with Detective Todomatsu. / Totoko wants to be a popular idol, but reality is so cruel.

Jyushimatsu carries out incredible feats. Meanwhile, the other brothers try to find out when Jyushimatsu developed his odd personality.

Wanting to become the main protagonist of the franchise again, Iyami holds a bizarre kart race to determine who the protagonist of Osomatsu-san will be.

The Matsuno Brothers travel to the future and see they're going to get fat, greedy and finally beaten up by angry girls. They make an effort to change their ways, but they are destined to be beaten up.

Jyushimatsu befriends a young boy named Eitarou but gets called in by Eitarou's mother when he starts imitating him. Contrary to Jyushimatsu's fears, however, she asks him to teach Eitarou jokes so he can make friends at school. Later, Dayon steals Dekapan's underwear, forcing him to give chase all over the city while butt naked.

Ichimatsu becomes paranoid when lucky things happen to him all day, so he and Jyushimatsu try to punish themselves to balance things out. A lovey-dovey couple go to a hot spring inn that's haunted by a zashiki-warashi named Osoma.

After Dekapan becomes president, his secretary Todomatsu tries to keep him from pressing the Big Red Button. Iyami attempts to pull off a sham ventriloquism scheme by having Chibita and Hatabou act as his puppets. On Valentine's Day, the brothers try in vain to get some Valentine's chocolate from someone.

Osomatsu and his friends decided to go on an overseas trip by Hatabo's plane. However, the plane crashed on the way, and I arrived at the place .

Osomatsu's big announcement to his brothers is interrupted when Iyami crashes a plane into their house, killing them all and sending them to the underworld. Brought before King Enma, the brothers fail to come up with a good reason why they should go to Heaven and ultimately wind up in Hell. Just as the brothers realize they are still virgins, Totoko and the others, aided by the spirit of Fujio Akatsuka, dive into Hell to bring them back. Receiving further help from other dead allies, the brothers manage to escape Hell and return to life, although they are not exactly happy with the state of their bodies.