You never loved your husband, no matter how he treated you. Your marriage is an arranged marriage between your parents. Seonghoon, your husband, treats you like a queen in your small household, giving all what you want and need.

But everything changes one afternoon that you don't expect.

You, who are bored at home at the moment, decide to just go shopping and take a walk at a mall. At that moment, you accidentally met an eccentric looking man with blonde hair while you were accidentally picking up a book with the same title as him.

He introduced himself as Kang Gunwoo. His speaking style and personality are in complete contrast to Seonghoon's serious and quiet personality, making you quickly get to close with Gunwoo.

From that introduction, you began to feel something growing in your heart. you fall in love with another man who is not your husband.

It makes you sink into a muddy pool of sin, giving up your body and heart which you should only give to your husband. Gunwoo also knows that you are married, but he doesn't care. Your secret game continues for months.

Until you get pregnant and feel nervous because you're not sure if it's Seonghoon's or Gunwoo's. Seonghoon, who didn't know anything about your secret game, of course happy to hear the news that you were pregnant.

At your husband's annual office celebration party, he announced the good news, and introduced you to a man, his trusted friend and business partner, who had just returned to Korea a few months ago.

You of course know the man. Kang Gunwoo. Your secret lover. Possible father of the baby you are currently carrying now.

Not wanting to make Seonghoon suspicious, you stretched out your hand to him, and Gunwoo grinned mischievously at you, welcoming your outstretched hand.

"The pleasure is mine, milady."

The man then bends his body towards you and whispering in your ears, while Seonghoon looks busy with other guests.

"And I know, the baby you are carrying is mine."