Our errant, determined antihero Yuki heads off to Alisia's royal capital to team up with Nell and the demons on a mission. Unfortunately for him, he finds himself kidnapped! Thankfully, the Supreme Dragon, Lefi, rushes to his side, and they manage to stop trouble in its tracks, which means they can return to their peaceful, bickering-filled, frolicsome days.

One day, Yuki and the gang decide to visit the dwarves' homeland. What better place to search for clues about the divine weapons in his possession than the holy land for weaponry? Off he goes to the shrine revered by the dwarves, where he discovers a stone slab with instructions written on it. After following the instructions, he touches the slab, only to lose consciousness—and awaken in a stark white, empty void where a variant of the God Spear awaits him!

Will Yuki's trip lead to a sudden job change from demon lord?!