In medievel time, a mage in a hero's party has expended all his mana to save the lives of his teammates when being pressed hard by the Demon Lord's army. Unable to utilize any spells, he is forcibly removed from the hero's party and is looked down upon as below a human being.

Fortunately for the mage, he is not your average human, as he is a reincarnator from Earth. As he slowly recalls his former life's knowledge, he begin his new adventure with a new profession, an archer. Watch as our protagonist sets out on to reclaim his lost honour and prove himself once again against the Demon Lord army, to aid humanity again in its darkest hour.