Yara Slavien, the powerless daughter of a powerful count. Without the magic that defines her noble lineage, she is nothing but a mocked, wingless butterfly. Desperate for escape from her family's scorn, she attends a banquet, hoping to find a husband. But the night ends in failure until she collides with Archduke Erez Astarion, a man who loathes her family.
Erez is a tormented devil, haunted by a magical power so immense it keeps him from sleep. But the moment he touches Yara, the pain vanishes. She is the only thing that can give him peace. He offers her a deal she can't refuse: marry him to gain her freedom and, in return, become his living cure. But the archduke's hatred for her family runs deep, and a shared bed doesn't mean a shared heart.
Will the wingless butterfly finally soar toward freedom, or will she be chained forever to the handsome devil who craves her peace?