Rain, the typical introvert had surrounded himself with a nice friend group he can call family, and they even formed a club together. However, when the club encounters a strange phenomenon in their world, they all need to find a way to stop the destruction. Along the way, they meet a mage named "Lyria", a victim of the demon lord as her world was destroyed. She guides them on their journey to stop the demon lord from wreaking havoc across the world. However, what they hadn't expected is that they would become heroes.