Houtaro and friends are suddenly attacked by Glion. As they struggle against enemies that appear one after another from a space-time gate, they discover that enemies have been sent from the future! To protect the present and the future, Houtaro and Rinne travel through time and space to the devastated future. Thus the final battle, with everything on the line, finally begins!

The Director's Cut version of Kamen Rider Gotchard's final episode, "This is My and Your CHEMY×STORY". It will features new scenes not seen in the original TV broadcast.

Taking place after the events of the Kamen Rider Gotchard TV series, the time is approaching for each of them to leave for their individual tomorrows. After graduating from high school, Houtaro Ichinose's dream remains the same: to become a big-time alchemist. Renge Icho and Sabimaru Tsuruhara are also moving on to the next stage. As for Rinne Kudo...