Asaya Kimijima

Movie War Mega Max featured the first seven Kamen Riders (Kamen Rider 1, 2, V3, Riderman, X, Amazon, and Stronger) to commemorate the franchise's 40th anniversary. Trailers for the film shown during airings of Fourze also showed the return of Kamen Rider Double as well as a new form for Kamen Rider OOO. Unlike previous Movie War films, where they were divided into 3 segments, Movie War Mega Max is divided into 5 parts. Like previous Movie War films the secondary Kamen Rider of Kamen Rider Fourze, Kamen Rider Meteor, made his debut in the film.

Confronting a mysterious enemy, the Pteranodon Yummy, Kamen Rider W receives aid from Ryu, who has infuriated Akiko by being too busy to attend her wedding! Akiko demands to know why he even became a Kamen Rider in the first place and the Pteranodon Yummy as it uses the Memory Memory on her to give her the answer to her question. Meanwhile, at the Kougami Foundation, Kousei Kougami talks of the most avaricious man in Japan, Oda Nobunaga, whose final resting place was found. With Doctor Maki overseeing the process, Kougami commissions the creation of a Cell Medal homunculus based on Nobunaga himself. Later, Kamen Rider Core begins to destroy the area as Kamen Riders OOO and W team up to fight the enemy. However, Kamen Rider Core proves too powerful and the two go underground to destroy the Gaia Memory’s source of power to even the odds.

The Kamen Rider Club discovers that the Dai-Zangyack fleet is moving towards Earth, led by Captain Marvelous as their Great Emperor. With many revived Super Sentai villains under his command, Captain Marvelous plans to obtain the Great Power of the Kamen Riders which is said to be "Ultimate Treasure in the Universe". Meanwhile, Tsukasa Kadoya becomes the Great Leader of Dai-Shocker once again and recruits past enemies of the Kamen Riders to take down the Super Sentai teams.

Leading an expedition in Germany, Kougami unseals the resting place of one of the alchemists that created the Core Medals in an effort to retrieve a set of lost Medals. However, upon the seal being undone, millions of Cell Medals erupt into a tower while creating a magical barrier that causes parts of Japan to flip over. As the alchemist reveals her plans to become a new OOO, Eiji and his friends are thrown into the past and must find their way back home and stop the alchemist before she destroys the world!

The year is 2021 and the world is in a state of chaos and fear. The ancient king OOO has come back to life after 800 years of dormancy. As the Kougami Foundation mounts a human resistance, Eiji Hino returns to Japan, believing he has at last found the means to revive the Greeed Ankh...

The life of a student named Kanou is transformed when a tiny man informs him that Earth will soon be annihilated. Kanou decides to do just as he pleases with the time he has left, leading to strange adventures that could be real -- or just a dream.

The Bamiyans is an unpopular three-member rock band. The band members have totally different personalities, but share the same passion for rock. These three get together and talk at the izakaya, the Japanese-style pub, have a quarrel at the studio and compete with another band to find their love for rock and dreams for the future.

Love Diving, a visual kei band worked mainly on the opening act of a senior band, aims for a major debut. One day, the vocalist Shin refuses his major debut without consulting the members, and the members become antipathetic. They then decide to participate in a contest called "tycon" which promises them a major debut and commercial tie-up.

Mika (Marie Ono), a Japanese-American woman, returns to her native Saitama hometown and becomes a therapist for a "nemuriba" ("a place to sleep").

Takeshi Hongo is a promising young man with a passion for motorcycle racing. However, his dreams are suddenly ruined when he gets kidnapped by Shocker, the evil secret organization planning to dominate the world. After being remodeled into a cyborg, Takeshi escapes and swears to protect the world from the inhuman monsters.

Eiji Hino is a wanderer who has no place to call home and a tragic past. When metallic creatures known as the Greeed awaken after their 800-year slumber to attack humans and feed off of their desires, the disembodied arm of the Greeed named Ankh gives Eiji a belt and three Medals to fight the other Greeed as Kamen Rider OOO. The mysterious Kougami Foundation approaches Eiji and begins assisting him in his fight against the Greeed, though their true motives are not clear. As Eiji fights the Greeed and their Yummy monsters, learning more about the Greeed and Ankh, he starts to find a purpose beyond his journey.

A young daughter (Mana Ashida) supports her father (Etsushi Toyokawa) who is diagnosed with Alzheimer's disease.