A fan of a web novel suddenly finds herself in the body of Lydia, the necromancer who saved her favorite character, Castian, from an untimely death. Determined to change his tragic fate and clear her name of false accusations, Lydia vows to keep Castian alive. Unexpectedly, she ends up pretending to be his lover and joins his expedition team. However, the more time they spend together, the more affectionate Castian becomes.