Scorned by the prince she loved and thrust into power after the mysterious assassination of her father, Latil becomes the new Empress of the Tarium Empire. She initially dreamed of a happy ending with her foreign lover, Prince Hyacinth, but he abandoned her to marry another woman for his own throne. Left heartbroken yet determined, Latil embraces her new role and the ruthless education of a ruler she has undergone. Her brother, the original heir to the throne, abdicated in her favor, and after winning a subsequent civil war against a disgruntled royal relative, she is crowned as the sovereign.

To secure her political power, balance the noble factions, and send a message to her treacherous ex-lover, Latil makes an unprecedented decision. She declares that rather than taking a single Royal Consort, she will assemble a harem of five young men from various walks of life. Her selection includes figures such as a duke's reclusive and suspicious son, a foreign mercenary king, a slick and worldly diplomat, a charming and youthful noble, and most provocatively, the younger brother of the prince who betrayed her. This act is both a political strategy to bind powerful families to her cause and a personal act of revenge.

The story follows Latil as she navigates the treacherous waters of imperial court politics while trying to solve the lingering mystery of her father's murder. She works to keep an uneasy peace among her new consorts, who each have their own secrets and agendas. The main narrative is driven by these political intrigues and the suspense of the unsolved assassination, while the harem situation itself provides moments of levity, rivalry, and budding romantic tension. Flashbacks and timeline events reveal deeper lore, including a prophecy involving figures from five hundred years prior, and a wider world where even vampire characters exist. As Latil grows from a wounded romantic into a strategic and powerful empress, she finds herself constantly tested by the men around her, the nobles who oppose her, and the lingering threat of her former love, Hyacinth, who seeks to re-enter her life.