Learning about Mr. Osomatsu's second season, the sextuplets of the past decide to see how they've turned out in the future. To their shock, they discover their future selves have become fat (except Ichimatsu, who has become anorexic) and greedy from their fame and eventually get their comeuppance in the form of an angry mob of NEET virgins. Wanting to change this future, the siblings decide to work hard to become proper adults, each in bizarrely different ways. However, this ideal ends up attracting an angry mob in a different way, and so the anime remains virtually unchanged.