A mysterious Dopant only known as the Donburi Dopant appears. Philip discovers that the only way to defeat it is to find out what kind of donburi meal it is filled with. The Narumi Detective Agency cook different original donburi meals, the "Hard-Boiledon" by Shotaro, the "Acceldon" by Ryu, and the "Doubledon" by Akiko, with Philip being the judge of the contest to discover what is inside the Dopant!
山本ひかる
as Akiko Narumi
菅田将暉
as Philip / Kamen Rider W
桐山漣
as Shotaro Hidari / Kamen Rider W
木ノ本嶺浩
as Ryu Terui / Kamen Rider Accel
藤江れいな
as Eriko Aida
太田真一郎
as Frog Pod (voice)
ヒロシ
as Izo Aida
道木広志
as Master of Fumen
立木文彦
as Narration, Gaia Memory Voice
