Twenty-five-year-old office worker, Deidre, is killed after getting T-boned from a drunk driver. She gets dragged away from the normal afterlife by an unknown force and is instead reincarnated as the Lich God.

Deidre, dying with lots of regrets, now tries to live her new life by fulfilling all the things she didn’t get a chance to do previously. However, as the Demon King, Fyren’s plot is revealed bit by bit, she learns that the nice life she tries hard to get used to might not last forever.