When the Holy Church condemns Lia, the sister of knight Ilian, to a sacrificial ritual, he risks everything by disobeying his superiors to rescue her. His fearless defiance catches the attention of Azriel, the powerful Dragon King, who takes Ilian to his mysterious abyss realm. There, a fiery dragon mark creates an unbreakable bond between them, tying their destinies together.

What begins as an unwanted captivity gradually develops into an intense and forbidden connection neither can easily resist. As Ilian becomes entangled in the Church's dark schemes and the dangerous power struggles within the abyss, he must confront his desire for revenge while struggling to understand his growing feelings for Azriel. With betrayal lurking at every turn, their bond could either destroy them both or change the course of their worlds forever.