Kamen Rider Den-O: I'm Born! (2007)

The robbers led by Gaoh stole Denliner, and they took the Owner, Naomi and all the Taros. Although Ryotaro lost his memory of Den-O, he and Hana follow them to travel back in time to 1600s in Japan with the help of younger Ryotaro, Sieg, Yuto and Deneb.