Tiana has been mocked and abused for years as the Empty Saint, a title born from the gradual, inexplicable depletion of her magical power. In the kingdom of Farron, she is treated as worthless, and when a political need arises to send a saint to the cursed Riviess Empire, she is discarded as a sacrificial offering. On the journey to the empire, assassins attack her convoy, and Tiana is pushed to the brink of death. In that desperate moment, the sealed memories of her past life break free: she was once Elce, the immensely powerful High Saint of the very empire she is now being sent to.

Upon arriving in Riviess, Tiana is received not as an expendable scapegoat but as a bride. To her astonishment, her future husband is Emperor Felix, a strikingly handsome and capable ruler who was, in her former life, her young disciple. Felix explains that their marriage is a contractual arrangement to stabilize the empire until the mysterious curses plaguing its lands can be lifted, and he intends for it to remain a purely political union. However, he secretly harbors an undying, lifelong devotion to his lost master Elce, a fact he openly states, unaware that his new wife is the very person he mourns.

Tiana resolves to hide her regained identity. She decides to quietly use her returning powers to cleanse the empire's curses and secure a comfortable, peaceful life for herself, viewing the contract as the perfect opportunity. Yet, as she works alongside Felix, assisting with magical outbreaks and venturing into cursed territories like the Red Cave, the lines begin to blur. Felix finds himself increasingly drawn to Tiana, sensing echoes of his beloved master in her actions, her tea-making, and her steadfastness. Tiana, in turn, finds her own feelings complicated by the dawning realization that Felix’s love for her past self is still alive, and that he may be starting to see that same person in her present form. At the same time, she must contend with remnants of the Farron kingdom’s political machinations, particularly from the saint Sylvia, a former ally in her past life who orchestrated her exile. As Tiana delves deeper into the source of the empire’s curses, she discovers a direct link to her own stolen power, setting the stage for a confrontation that could restore the land and reshape her future.