Decade arrives in an alternate version of the story "Kamen Rider EqG" and must determine how he needs to help the unfamiliar Riders he finds. (Kamen Rider Dragon Knight and Decade crossover.)
A man who's a fan of MLP and Kamen Rider had send to Equestria by the original Kamen Rider Decade to protect it from monsters from the Rider Universe as the new Kamen Rider Decade, soon he discovers he's not the only Rider in Equestria.