The Antimagic Academy is a special school that specializes in educating future witch hunters whose primary job is to find and stop magical threats and dangers. They are also called Inquisitors, whose aim is to stop and confiscate, not kill or destroy. The Academy is divided into several squads, but the most infamous one is the 35th Test Platoon, also nicknamed the "Small Fry Platoon" due to its low ranking among the other squads and its incompetent members.

However, the ever so boring atmosphere of this unlucky squad gets spiced up when their little club gets powered up with a new member named Ouka Ootori, a former Inquisitor and an excellent fighter. What they do not know is that she was removed from her position because of her tendency to break the rules and an incident where she killed a witch. The club is run by a clumsy captain Takeru Kusanagi who is unable to use anything except his sword, so Ouka's views clash immediately with the views of other members of the squad. Can they cooperate with someone who hates witches so much and will they be able to learn from each other’s mistakes and tragic pasts?