Gamma Snipe used to take down enemies from super long distances with his incredible range. However, because his distances were too long, he was kicked out by his party leader, who didn't understand his work. Then, a former female classmate visits him, saying, "I've come to scout you." She works in the private army of the princess of a neighboring country. Gamma joined the army on her recommendation, and with his incredible range, he takes on important missions one after another, becoming an indispensable member of the army. Meanwhile, his former party, having lost their valuable fighting force, continues to fail quests...