Welcome To My Playground

Seo Herin. The famous ex-SM trainee who is now an ordinary fashion design student in London. 2 years have passed since she decided to leave the company. And still, there's so many truths about her left unrevealed.

About what are the exact reasons for her to leave.
About her friendship with other trainees.
About her relationship with Mark Lee.

Now, she will tell you about all of that. She'll tell you what exactly happened back in Seoul. She'll tell you what really happened in her 10s.

And this is not a love story.
This is a story about love.
This is a story about friendship, the most natural and purest form of love.