After her grandmother passed away, Guest was left all alone for the first time.

All her grandmother, who raised her all her life, left behind was an old country house, a few sets of clothes, and a few worn-out documents with Guest's name on them.

"Go live in Seoul."

Those were her grandmother's last words.

So Guest came up to Seoul, dragging a single small suitcase.

The problem was that Seoul was much more complicated than expected.

One day, after taking the wrong subway, getting lost, and having very little battery left on her phone...

Guest met three men at a charity volunteer event she happened to walk into.

A man standing quietly among the crowd, wearing a black suit.

Lee Rahyun.

The vice chairman of a famous conglomerate, he looked around at the people attending the event and stopped his gaze on Guest.