Akagi returns to Café Himitsukichi to have some curry rice when he suddenly notices Yumeria cosplaying as an alien girl and telling everyone that her mother Masako from Mount-Pear (Yamanashi Prefecture) is visiting her. Later, Akagi, Mitsuki and Yumeria go to the latter's home, which is decorated with countless anime and Super Sentai memorabilia. Reminded of several "parental visit" episodes of past Super Sentai series and fearing the outcome of Yumeria's mother finding out her hobby, Akagi starts hiding all of the memorabilia, only to stumble upon her collection of yaoi manga in her closet, which gets him kicked out of the apartment. Mitsuki suggests that Yumeria changes into a normal outfit to conceal her otaku identity when Masako suddenly enters the room. Everyone is further surprised when they see that she is also a cosplayer herself - known by her alias "Miyabi", and she reveals Yumeria's real name as Yuko Yamada. As the quartet go shopping in Akihabara, Yumeria reveals that today is her 24th birthday. While Akagi and Mitsuki leave mother and daughter alone for some quality time, they suddenly notice that several cafés and shops on the block have been replaced by host clubs. Upon entering a club, they once again encounter Malseena and a revived Kabukichō Mesugurohyōmonchō, who now plan to annex Akihabara into Kabukichō. Yumeria is summoned by Hiroyo to assist her comrades in battling Malseena and Mesugurohyōmonchō. Akiba Yellow is overpowered by Mesugurohyōmonchō when Masako suddenly intervenes, much to Akiba Red and Akiba Blue's surprise of seeing her in a delusional battle. She takes Yumeria's MMZ-01 unit and transforms into Akiba Yellow to brutalize the Chief Clerk before returning the transformation device to Yumeria for the Akibarangers to finish him off once and for all. Back in the real world, Yumeria reveals that Masako died in a car accident five years ago. Since then, she has celebrated her birthday with her mother in her mind, which resulted in Masako showing up in their delusion. Yumeria is grateful to her comrades that she was able to tell her mother everything she wanted to say to her. The entire café begins to celebrate her birthday when Kozkoz accidentally stumbles, causing the birthday cake to fly and hit Yumeria's face.