These six men aren't trying to be young again, they're trying to prove their lives still matter when the world has already decided they're finished. The show builds its quiet power from watching them actually learn to dance, actually doubt themselves, actually stay committed when their bodies ache and the industry doesn't care how hard they're working. A 13-minute format means there's no room for artifice, just men at their breaking point choosing to show up anyway, and that choice becomes the entire story.

Six middle-aged men set out to become idols as part of a new project from Manpuku Entertainment Productions, a company hoping the venture will bring it back to life. Among them is Kentarou Sanada, a jobless salaryman whose old employer went under. He walks into an idol audition believing it is an ordinary job interview, and he is stunned when he hears he has been accepted. He and five other men in their forties now make up Eternal Boys, a group meant to show that a debut can happen at any age. Seasoned by business wins and losses, the members run into the limits of age and physical stamina while competing in a field crowded with far younger performers, and they wonder whether their years will hold them back or become their greatest strength. Told in short episodes, the story blends music with everyday slice of life.