After an untimely and unheroic death, a young man finds himself in a strange afterlife. Before him stands a goddess who offers him the standard isekai proposition: he may reincarnate into a fantasy world and can choose precisely what he wants to become. His initial dream is classic, wanting to be reborn as a powerful hero surrounded by a harem. However, he quickly discovers that this popular choice, along with options like becoming a demon lord, has an impossibly long waiting list of tens of thousands of years.

Faced with the prospect of an eternity in limbo, the protagonist decides to exploit the system. He realizes that the more original and absurd the request, the faster the reincarnation process. To skip the line, he throws out an increasingly bizarre series of forms he would like to take, beginning with his first choice: being reincarnated as the rib of a hero who is enjoying his own happy ending with a harem.

This decision launches the series, which does not follow a single continuous quest but instead presents a series of self-contained comedic vignettes. The unnamed protagonist is reincarnated over and over again into a variety of ridiculous forms, including a hermit crab and a vegetable, as he searches for a loophole to achieve his own personal happy ending. Each new existence allows the show to parody the common tropes of the reincarnation genre, from the typical ways protagonists die to the overused power fantasies. The narrative is guided by a sharp-tongued and indifferent goddess who manages this chaotic bureaucratic process. My Ribdiculous Reincarnation is produced by studios Qzil.la and S.o.K.