Amy Ruby Knight, a 35-year-old systems administrator, dreams of becoming an author. After a confrontation with her boss, her work environment becomes unbearable, prompting her to quit and pursue writing full-time. Her life takes a sudden turn when the God of Earth kidnaps her, presenting an ultimatum: reincarnate into a fantasy world or return to die of a heart attack. Amy chooses reincarnation and selects her bonus skills: appraisal, item box, universal language comprehension, rapid recovery, and alchemy. The God of Earth warns that alchemy is a "dead" skill and may attract attention but grants her request. Amy reincarnates as Hinata Hikari, determined to live a life of adventure.

Lucy is an artificial lifeform created by Solomon using their sword, Ouroboros. Her goal is to become the seventh archcelestial and improve the lives of mortals - in whatever world, dimension, or realm they may occupy. There is only one path forward for someone with Lucy's aspirations: to attempt the trials of the soulsworn and pass to become the archcelestial of the mortal will. Her first trial begins now.