A musical production of Kensuke Yokouchi's play, "Nocturne: The Tender Night of Arsonist Tsutomu" (夜曲 ～放火魔ツトムの優しい夜～)
In Edo, an amnesic man with extraordinary sword skills searches for clues about his past and his identity.
A murder has happened in an isolated pension. Igarashi Ikki, together with his devil partner Vice, and Kadota Hiromi become detectives to solve the mystery.
Touma, Yuri and Mei somehow ended up in the World of Zenkaiger while four Zenkaigers, except Juran, ended up in the World of Saber. The reason for their swap is due to a man who wishes to rid the world of heroes. How does a teenage boy manga artist tie into this? And why are they sent into different stories filled with previous Kamen Riders and Super Sentai Teams?