When evil kings summon kids from Earth to be used and abused as fast-leveling soldiers in their petty wars, the Isekai Police will be there to stop them. A group of ex-isekai protagonists in their own right, they utilize their collective skills to fight for the end of summoning abuse.

Artyom Choi, cynical ex-hero and founding member of the organization, is sent to investigate the presence of an Earther on an innocently idyllic World where no summoning has supposedly taken place. His mission: rescue the Earther and figure out how he got there. Dark secrets lie beneath the surface of paradise, however. Will he be able to find this new hero and get out before whatever malicious forces brought them there doom them both?

This story is a deconstruction of the isekai genre that references and sometimes pokes fun at various tropes, while still delivering a sincere and emotional story. Artyom's not looking for harems or levels, he's in it to protect the people of Earth.