Just recently, DecaEnd has posted the movie summary of the upcoming Kamen Rider 40th Anniversary film, OOO - Den-O - All Riders: Let's Go Kamen Rider and it is similar to the early information we have coming from the scans!
Script: Shoji Yonemura
Dialog Supervisor: Yasuko Kobayashi
Director: Osamu Kaneda
OOO is fighting a monster. However this monster isn't a Yummy. It's actually the Mole Imagin.
Suddenly the DenLiner appears. Kotaro walks towards a child and the pass shows the date November 11, 1971. Why does this child have memories from 40 years ago?
All of this confuses Eiji and Ankh, the two of them sneak into the DenLiner and follow them 40 years to the past. Ankh is planning to find all the Medals while the other Greeeds are sealed. NEW Den-O defeats the Mole Imagin, it explodes and Eiji falls on Ankh from the impact of the explosions. Ankh drops a one Cell Medals and rolls out, someone picks it up and the DenLiner drives off.
When Eiji and Ankh are back in 2011, the world is controlled by Shocker. It's revealed that the Cell Medal caused #1 and #2 to lose against Shocker. After that no Kamen Riders showed up. Eiji and Ankh now has to work with Kotaro, who wasn't affected from this.
Will OOO and Den-O be able to save the world? That is for us to find out when the film hits Japanese theaters this April 1!
UPDATED: More pictures courtesy of DecaEnd of HJU!