Yuuta Hibiki wakes up in the room of Rikka Takarada and notices two things: he has no memories, and he can hear a mysterious voice calling his name from a nearby room. On further inspection, he finds a robot—which introduces itself as Hyper Agent Gridman—behind the screen of an old computer. Much to Yuuta's surprise, Rikka cannot hear Gridman, nor can she see the ominous monsters looming over a thick fog as it envelopes the town outside. Another giant monster materializes in the city and proceeds to wreak havoc. Amidst the confusion, Yuuta is once again drawn to the old computer and merges with Gridman. Suddenly, he appears in the middle of the battle and is forced to fight the monster. Together with Rikka and fellow classmate Shou Utsumi, Yuuta forms the Gridman Alliance to defeat the monsters plaguing the city and find whoever is responsible for their emergence.

Taking place 75 years after the first series, Steel Angel Kurumi 2 brings the Steel Angels in a new mis-adventure. High school student and aspiring cellist Nako Kagura accidentally discovers and kisses Kurumi Mk. II at her home, thus making her Kurumi's master. But things go awry as Nako's best friend Uruka gets jealous and tries anything - including her father's army of top-secret mecha - to destroy Kurumi and win back Nako. Things get more out of control when Saki Mk. II is awakened by Uruka, and Karinka Mk. II joins in to steal Nako away from Kurumi. (Source: ANN)

Four additional short stories of the Steel Angels: Saki becomes a film actress, Karinka goes on a blind date with Kamihito, Kurumi practices the art of becoming a traditional Japanese woman, and the rest of the Steel Angels engage in a contest to win Nakahito's heart. (Source: ANN)

Command, control, and communication: the three pillars to successfully execute missions in modern military combat. They are also the source of inspiration behind Stella Women's Academy airsoft club, aptly named the C3 Club. Due to the club's nature, the members have trouble finding newcomers, but, as the school year starts, they hope to find their next sharpshooter among a new crop of students. Yura Yamato is a freshman at Stella; she sports an unassertive personality that makes it difficult to make friends. She soon discovers her absent roommate owns a massive collection of military memorabilia and movies, including a replica Desert Eagle. When one of the C3 Club's members catches Yura re-enacting an action movie, she drags her into the Club's airsoft practice match. Despite being on the losing side, Yura is unexpectedly drawn to the excitement of the game. Upon her return, Yura's roommate—Sonora Kashima—reveals herself to be the C3 Club's president and invites her to join. Now with Sonora by her side, one more exhilarating match convinces Yura to sign up. Thanks to her new teammates, Yura discovers a hidden side to herself and an unexpected love for airsoft. However, as her dedication to the game slowly takes over her life, Yura finds herself on the path of great change and success—one that may easily lead to self-destruction.