In the first episode, Akiko gathered Reika, Is, Poppy, Sakura, and Hana at Happy Spa to investigate a case. The girls are excited by the common topic about Kamen Rider, but Hana is not looking happy. Hana is unable to decide on what to do about the letter she received from someone claiming to be her "real sister" who wants to see her. Worried, Hana leaves Happy Spa with Akiko, who claims to be a detective. They are then attacked by the evil organization Black Satan, the organization Kamen Rider Stronger and his partner, Tackle fought and they want to recruit Hana as their new boss. Sakura rushes to Hana's rescue and struggles to protect her.
Written by Hiroki Uchida (Kamen Rider Saber, Ultraman Orb), this three-part series will be directed by Koichi Sakamoto (Kamen Rider Fourze), and is set to premiere on August 7th, exclusively on TTFC.