College student Iwatani Naofumi is reading a book titled "The Records of the Four Cardinal Weapons" in the library when he is suddenly summoned to another world and told he has to save the world as the Shield Hero, one of the Four Cardinal Heroes. And one morning, he finds all his money and equipment gone.

The mysterious girl that showed up out of nowhere was actually Filo. She's a filolial queen with an advanced transformation ability, and she can even take human form thanks to it. However, her clothes get ripped every time she transforms, meaning Naofumi has to get her some magic clothes if he doesn't want to go broke. The party leaves on a new adventure to gather the materials required.

Izumi tries to bond with Rei, but the conversation gets awkward. Rei tries to hide that she likes cute things, but what will she do when the virus starts affecting hamsters?

After hanging out with the Body Improvement Club and Telepathy Club more, Mob starts to feel joy like he'd never felt before. One day while he's having fun with them, he gets a call from Reigen, spoiling his fun. Mob asks Reigen to stop summoning him so suddenly, and Reigen just handles the situation in his usual overbearing manner. And because of something very minor, a gap forms between them. Reigen is forced to go on jobs without Mob, forcing him to reexamine himself.

Can you defeat your sister who has fused with the evil god? With Mu’s question, Shoko agonizes over the fate she bears. That’s when Orion Rigel, the Ghost of an ex-Silver Saint, stands before Shoko. From Rigel’s sad eyes that once shared a past with Kyoko during Saint years, Shoko senses his true feelings and... Mii vs. Emony, Aiolia vs. Saga, the individual battles within the Temple of Eris begins…

Why suffer the inconvenience of using umbrellas when superior anti-gravitational fields can do the job better? Later, a belt promises to give Ueno an edge in a sumo match.

Julia fundamentally disagrees with an idealistic and influential man named Isao. But he apparently has a plan to deal with both the air pirates and the energy crisis.