Season 1

A starry sky with a comet flying across it and the sound of it striking the ground can be heard. Out of it rises a giant black knight looking figure in wielding a giant black lance. Ayano is then shown before speaking the word "Fiarem" as she gazes upon hundreds of these comets striking the ground, causing massive destruction. A comet then lands a few meters in front of her causing an explosion and a pendant above her ear to start glowing. She turns around to talks to an unseen figure, stating that they will meet again and that they can become one.

The command room receives a report that a Fiarem has been spotted. In response, Rio orders the observer to contact Ayano. It then cuts to Ayano, who is half-asleep underneath her kotatsu, much to Rio's shock. Her feet are outside of the kotatsu, making her cold, so she tucks her feet in, but this makes her too hot. She then precedes to remove her socks which, according to her, "feels good". The observer reports to the clearly agitated Rio that she has fallen asleep.

Hinata arrives in Ayano's room, telling her that she needs to wake up. However, Ayano is not responding to her, causing Hinata try to wake her up by tickling her, starting a tickle fight. This, however, ends up exhausting them, causing both of them to fall asleep. In the command room, Rei orders Kasumi to go wake them both up, to which she complies.

Kasumi arrives in the command room with Ayano and Hinata, having woken them up by her by hitting them on the head. Rio tells Ayano to get ready for an emergency dispatch. Ayano moves to a platform while complaining she'd rather be home, but before she can finish the platform opens, causing her to fall. She lands in a giant bath while a device called the "Deva System" appears above her and fires a laser at her. She then emerges from the bath as a giant and stretches her body.

Ayano changes into her combat suit along with Moka and Izuki. Izuki scolts Ayano for being late, for which she apologizes. The three continue to talk while the normal sized male staff members struggle not to peep at the giant girls. Moka, being out of lip balm, asks Ayano for hers. However, as she is about to give to give it to her, the giant can of lip balm slips out of Ayano's hand and falls to the ground, causing huge chaos among the staff below her, for which she also apologizes. After they finish changing, the three girls head out and Ayano asks the people in the command room to wish them good luck.

A Fiarem terrorizes the city until Ayano arrives and kicks it in its face, causing it to crash in a nearby building. She is soon joined by Moka and Izuki. The Fiarem counterattacks by firing a laser from its eye at them. From the command room, Rio orders the three to try to keep the local damage to a minimum. Moka states that it'll be no problem just as she accidentally hits a nearby building with her elbow, destroying it, much to Rio's annoyance. Ayano then gets serious.

Following the battle, the Ayano, Moka and Izuki are relaxing in a bath house. Kasumi then suddenly barges in and hits them on the head. She then reveals that the three did in fact not defeat the Fiarem but ran away. Her complains are, however, shut down by Nagisa, whom states that in order to use their powers they must form bonds with "the Spec Ops Officer". Ayano and Moka try to use this as an excuse for running away, however, Kasumi tells them that if that is the case they will try a "simulation", confusing everyone present. Meanwhile, Hinata is getting electrocuted in a galvanic bath.

Ayano, Izuki, Nagisa and Kasumi are seen in a living room with Hinata in the background and Moka disguised as a stuffed animal. Kasumi starts the "simulation" by trying to have a "nice small talk". Kasumi, pretending to be "the Spec Ops Officer", introduces herself to Nagisa and tells her to give a reply. However, her reply is like something out of a romance novel. While Ayano thinks it went well, Kasumi states it didn't. Erenoa is then seen observing the "simulation" while taking bath with Rio, also thinking it went well.

Kasumi continues the "simulation". Once again pretending to be the "Spec Ops Officer", she invites the others to a one on one training section. However, all of them turn down the invitation, Hinata because she doesn't want to become a giant, Izuki isn't interested and makes up an excuse, Moka just states she doesn't want to and Ayano doesn't answer at all and slips under her kotatsu, pretending to be asleep. Annoyed by this, Kasumi tells them to take the "simulation" more seriously. At that moment the alarm suddenly goes off and the TV screen in living room shows that a new Fiarem has appeared.

In response to the appearance of the new Fiarem, all of the Ragna Strikers are sent out to face it. However, upon arrival they find that, even from their perspective, the new Fiarem is huge. Nagisa and Hinata try to hurt it but their attacks have no effect. The Fiarem then hits the ground, causing a huge shock wave that blows Ayano back. In the command room, Erenoa tells the girls to come back alive.

The Ragna Strikers continue to fight the huge Fiarem. Moka and Kasumi manage to block its attack and push it off balance. Seeing this opening, Izuki tells Nagisa and Hinata to once again attack it, actually hurting it this time. Ayano, whom is still on the ground from the Fiarem's previous attack, is told be Kasumi to get up and provide support. However, at that moment even more Fiarem start to appear, raining down from the sky like shooting stars. Meanwhile, in the command room, "the Spec Ops Officer" finally arrives.

Overwhelmed, most of the Ragna Strikers start to lose hope. Ayano, however, refuses to give up. Suddenly Ayano's hair clips start to glow. Rio then informs the girls that "the Spec Ops Officer" has arrived and that they'll be initiating the "Mind Drive", fusing his mind with theirs, making them "invincible". With this the girls begin their counterattack.