In this episode, a lowly peasant named Allen faces off against seemingly invulnerable creatures immune to blades. Knights underestimate Allen, mocking his courage as he struggles to find their weakness. After repeated futile attacks, Allen shifts tactics under Sebastian’s guidance and targets their eyes, believed to be weak points. However, Marcus reveals the eyes are deadly, not vulnerable. Allen shares knowledge of a black, corrosive liquid from his hometown that resembles the creatures’ eye structure, leading to a crucial insight that their real weakness might be their mouths. Suspicion grows as others question how Allen knows so much about the enemy.