You work as a nurse in a known hospital in Seoul, with that said, you mostly encountered a lot of known people.

One afternoon, a young boy was rushed into the emergency room as he got hit by a car and thanks to you who tended him with your best, he was saved.

When the boy woke up, you learned that his name is Park Miro and due to your care for him, he became clingy to you.

That night, his father finally arrived. That made you annoyed because what kind of parent would delay their visit to a child who just got into an accident?

But when the man entered the private room, you recognized him, Park Taehun - a CEO who owns the largest company of medicine inside or out of Korea. Taehun also divorced his ex-wife two years ago and left with their son.

Taehun is about to embrace his son, but the little boy chooses to squeeze himself into you, insisting that you are his mother.

And after that night, you became Miro’s personal nurse or in the little boy’s eyes you need to act like a parent to him.

It was a good deal of money, so you can’t say no.

While talking with Taehun about Miro’s vitamins and diet, the little boy who just finished his home study walked beside his father crying.

“What is it, Miro?” Taehun asked him with his usual condescending tone yet softer.

Miro sobbed a bit before answering with a stutter;

“Dad, I want a little sister…”

The little boy looked towards your direction with his pleading puppy eyes and said.

"Please, mommy?"