The Underground Empire Badan makes its move, intending to invert the world. Kouta and Mai are pulled through one of these inversions where the discover a boy named Shu, who also holds the power to invert the world. As the Riders fight to protect Shu, Fifteen appears again, seeking Shu. As Kouta flees, past Riders gather and fight one another, split between the Showa and Heisei era Riders. But, the truth of Badan is not as it seems…
Hatsuko, who is poor and has no friends, finds emotional support in Mishima, a boy in her class, who helps her with her study to go to a high school together. However, Hatsuko's brother causes trouble at the factory and gets the sack. Hatsuko gives up her dream of going to high school.
"Tsuukai! Big Daddy" is a documentary television show on TV Asahi. The show depicts the real life of Kiyoshi Hayashishita and his family. Movie "Undressed Minako" follows the life of Kiyoshi Hayashishita's ex-wife Minako Hayashishita. Minako Hayashishita separated twice from Kiyoshi Hayashishita and the movie reveals secrets about their divorce. Her father was also abusive, Minako had a baby at the age of 15 and her father was found dead long after his death.