The siblings try their hand at internet streaming. Later, Iyami uses an experimental detergent to keep his suit clean, but it's drunk by the siblings and makes them invisible.

Ichimatsu struggles to get any sleep with his brothers being noisy all night and refusing to turn off the light. Unable to take anymore, Ichimatsu starts monitoring the brothers' courtesy towards each other, leading Osomatsu to get criticized the most. Later, Iyami proves his skills at the arcades by playing games at their highest difficulty.

Matsuzou becomes hospitalized, leading the brothers to seriously think about their lives and get proper jobs to support their family. As Osomatsu starts to find this new life boring, Totoko encourages him to think for himself.

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.

The Matsus welcome a pair of AI to help them with their daily lives, but do these AI have ulterior motives?