One day, Hirotaka, a former junk collector who was transported to another world, was granted the skill "Junk Collection"...!? But it turned out to be a useless skill that only allows him to randomly collect one piece of junk from anywhere in the world. Labeled worthless, he was expelled from the hero’s party and left to wander the new world alone. Just when all seemed lost, he unexpectedly retrieves the cheat magic sword "Osoro," which was also abandoned by the Demon King—!? Thus begins the free-spirited, exhilarating adventure of a former junk collector!