After living as a ruthless lawyer who cared about nothing but money, a woman suddenly finds herself reincarnated as a penniless extra in a romance fantasy novel. Desperate to escape poverty, she decides to defend the world's most notorious villain, a grand duke facing execution for murder. Their arrangement soon turns into a contract marriage, with the duke warning her not to expect anything beyond their agreement. But she has no intention of falling in love anyway. All she wants is to collect her generous payment, get divorced, and live a comfortable life. Unfortunately, things don't seem to be going according to plan...