“I’m a loser, so I have to work harder. Harder than Ever.” In this era where inherent powers were common, unknowingly the people were divided into the winners and losers. Tenji Amagi, a 16-year-old boy who was born with the ability of such a loser, [Floating small objects], dreamed of being a professional explorer. An Explorer was a job that everyone envied as they were called the Heroes of the world, protecting civilians by fighting monsters in dungeons. The boy always looked forward to become one, even though he was not gifted. And he was poor and an orphan. This is a hero who grows up to be the best explorer in the world, a boy who had neither talent nor a bright future. This is the story of the growth of a boy who received [Hell Beast Summoning]. He has to work hard every day to maintain his calling.