"Seoul Performing Arts High School" Is a school especially for arts, where Kairie and Aleska  attends. Two best friends that has known each other since kindergarten. The group SPA4, a group only for rich kids was formed, which includes Kim Bum, Jaejoong, Mingming, and Ji-Yong (GD). The leader, Ji-Yong, is the main dancer and the main rapper, Jaejoong, is the main singer, Mingming, is the lead rapper, and dancer and also is the maknae, Kim Bum, is the main actor, and vocalist. 

The best friends are starting their 2nd year in Seoul Performing High School. Their school life was normal until they got involved with the members of SPA4. On a one normal school day, Kairie bumped over Jaejoong. Jaejoong did not say anything and walked away without saying sorry. Kairie  fell for him right after they bumped into each other. That was where the REAL love story beguns. Aleska  on the other hand, was still having a normal school life until an SPA4 member, Mingming, sat next to her in acting class. Mingming, was different from the other SPA4. He was calm and quiet, doesn't like to talk and hides alot of his feelings. Aleska (Maria Nancy) who thought that Mingming has no respect, she starts seeing him as her rival. At the same time, Jaejoong still has not noticed Kairie which makes Kairie lost hope until something big happened in between them. 

Slowly, the story developed that Jaejoong has fallen for Kairie because of her kindness and charms, and Mingming fallen for Aleska's charms. Aleska's attention was on Ji-Yong, but after things happens, she starts falling slowly back for Mingming. The two best friends faces many problems that challenge their friendship, and love."