The eternal conflict between Hero and Demon King erupts catastrophically when their overwhelming arcane forces collide across dimensions, obliterating a high school classroom in a cataclysmic explosion. Students who perish in the blast undergo reincarnation into an alternate world. The protagonist—bearing the lowest social standing among her peers—awakens as a spider in this perilous realm. Yet her fierce determination and indomitable willpower enable her to rapidly adapt to her surprising transformation. Witness her extraordinary tale of survival as she navigates a dangerous world in spider form, leveraging resourcefulness and sheer tenacity to overcome impossible odds and carve out an existence in this unforgiving new reality.