完美的学生和最热的女孩的学校Joo-hee传闻是在“十人”的行业，她的青春被毁了。
为什么我的第一次爱必须是你？
Joo-hee（Kang Jin-ah）主修纯粹的艺术和梦想去法国。 她是每个人的榜样，因为她是漂亮和有才华的。 Jeong-woo（Lee Joo-seung）是她的同学，是一个网络作家wannabe，他喜欢Joo-hee，但他不敢接近她。

有一天，Jeong-woo发现Joo-hee是当天的学生，但晚上是一个“十人”电话的女孩。 他们现在变得紧密，他们分享一个秘密。 在物质和情感上，Jeong-woo帮助Joo-hee，因为她想要毕业，有很多钱和高年级。 然而，Jeong-woo的第一个东和也发现了Joo-hee的秘密和各种关于她乞求传播的谣言和X档案。

  Perfect student and hottest girl of the school Joo-hee is rumored to be in the 'ten-pro' industry and her youth is ruined. 
Why does my first love have to be you?
Joo-hee (Kang Jin-ah) is majoring in pure arts and dreams of going to France. She's a role model for everyone as she is beautiful and talented. Jeong-woo (Lee Joo-seung) is her fellow schoolmate who is a web-toon writer wannabe and he likes Joo-hee but he doesn't dare approach her. 

One day, Jeong-woo finds out that Joo-hee is a student in the day but a 'ten-pro' call girl at night. They become close now that they share a secret. Materially and emotionally, Jeong-woo helps Joo-hee as she wants to graduate with lots of money and with high grades. However, Jeong-woo's first Dong-hwa (Jeong Yeong-gi) also find out Joo-hee's secret and all sorts of rumors and X-files about her begging to spread.