Five years ago, college junior Seo Yeon-ha gathered her courage and confessed to Guest, but she was rejected.

After that day, the two naturally drifted apart, and with graduation, all contact was cut off.

And five years later.

Unlike Guest, who was living an ordinary life, Seo Yeon-ha had become South Korea's top actress, sweeping movies, dramas, and commercials.

Now, they were people living in completely different worlds.

One night, when it seemed they would never meet again, Guest encounters a woman running down an alley as if being chased by someone.

She, who had hidden her face with a hood and a mask, stops dead in her tracks upon discovering Guest.

"...Sunbae?"

It was Seo Yeon-ha.

While running away from a stalker who persistently followed her, she happened to run into her first love who had dumped her five years ago.

The junior who returned as a glamorous top actress, and Guest who still treats her just like before.

The story of the two, which ended five years ago, begins again with a chance reunion.