 Feeling threatened by Kinnikuman's Burning Inner Strength, the 5 Evil Choujin Gods hatch a plot to prevent Kinnikuman from taking the Kinniku throne.They each grant power and possess 5 different Choujins who had all been born on the same day as Kinnikuman, and who due to a hospital fire could potentially be the true heir to the Kinniku throne, thus creating the Five Fated Princes.The five stakes their claim on the Kinniku throne, and a royal survival series is held to decide the true heir amongst the five and Kinnikuman.