Kamen Rider W Forever: A to Z/The Gaia Memories of Fate
Set between Kamen Rider W episodes 44 and 45, the film focuses on the invasion of Futo by the Special Mercenary Force "NEVER" (特殊傭兵部隊NEVER Tokushu Yōhei Butai Nebā) led by a man named Katsumi Daido.
NEVER has discovered the existence of Foundation X's T2 (Type 2) Gaia Memories (T2（タイプツー）ガイアメモリ Tī Tsū (Taipu Tsū) Gaia Memori) — 26 next-generation Gaia Memories created by Foundation X based on the Gaia Memories used by the Kamen Riders.
After he steals the Eternal Memory, Daido leads NEVER, his top six members using T2 Gaia Memories to assume Dopant forms, in an assault on the city to gather the T2 Gaia Memories scattered across the city.
Assisted by Interpol investigator Maria S. Cranberry, Shotaro's investigation into NEVER leads to Philip being captured by the terrorist group in Futo's darkest moment as Futo's Kamen Riders prepare for a final battle.
Kamen Rider × Kamen Rider W & Decade: Movie War 2010
Movie War 2010 is split into three parts.
The Kamen Rider Decade portion of the film, written by Shoji Yonemura, is titled Kamen Rider Decade: The Last Story (仮面ライダーディケイド～完結編～ Kamen Raidā Dikeido ~Kanketsuhen~). It follows the series cliffhanger ending at the climax of the Rider War. The film is billed as the "True Ending" (本当の終わり Hontō no Owari) and was originally subtitled Decade vs. All Riders (ディケイド対オールライダー Dikeido tai Ōru Raidā).
The Kamen Rider W portion of the film, written by Riku Sanjo, is titled Kamen Rider W: Begins Night (仮面ライダーＷ（ダブル）～ビギンズナイト～ Kamen Raidā Daburu ~Biginzu Naito~), taking place between episodes 12 and 13 of Kamen Rider W, investigates the origins of Kamen Rider Double as briefly shown in the cold opening of the series' first episode, referred to in the series as the "Begins Night". The film is described as the "True Beginning" (本当の始まり Hontō no Hajimari) and was originally subtitled Episode Zero (エピソードゼロ Episōdo Zero).
In the final portion of the film entitled Movie War 2010 (MOVIE大戦2010 Mūbī Taisen Nisenjū), a convergence of the two films that brings the casts and characters of Decade and W to finish the fight with Super Shocker together.