"I will never love you," her husband said, but something is wrong.

Sierra of the ducal family has been continuously exploited by her greedy father and scorned as a "sacrificial lady."
Despite this, she has worked tirelessly for the people in her father's place, but is finally ordered to marry Julian, a military officer rumored to be ruthless.

In their cold newlywed life, Sierra learns that he, too, did not truly want to marry her.
She then proposes divorce, but this marriage is backed by the royal family and cannot be easily dissolved.
The two conspire to achieve divorce.

As they continue their temporary marriage, Julian protects her many times, and Sierra experiences for the first time the security of having someone to rely on.
Meanwhile, his attitude also slowly begins to change…