突如、世界各地に出現したダンジョン。
人々は「探索者」となり、そこでしか入手できない資源を手にするため、ダンジョンへ潜る時代となった!
黒瀬朔斗(くろせさくと)も、不治の病に侵された幼馴染を助けるため、全てを癒す薬「エリクサー」を探しダンジョンに挑んでいた。
しかし、仲間から戦力外通知を受けてしまい――。
ダンジョンと現実世界を舞台に、魔物や悪意ある人間に立ち向かう――。
異世界バトルアクション開幕!!
Dungeons suddenly appeared all over the world.People became “explorers,” diving into these dungeons to obtain resources that could only be found within them!Sakuto Kurose, too, ventured into the dungeons in search of the “Elixir,” a cure-all medicine, in a desperate effort to save his childhood friend who was afflicted with an incurable disease.However, he was dismissed by his comrades as being no longer useful in battle—.Set against the backdrop of both the dungeons and the real world, he faces off against monsters and malicious humans. Thus begins a thrilling otherworldly battle-action!