I'ts all started when an angel fall in love with a jerk.

Jung Soojung - A naive, cute, innocent and independent girl. The only daughter of PK Group, one of the biggest company in South Korea. She's a mistress from a rich family. She is a kind person. Always help others. She is 17 years old. Studying in KStar High and she is a genius in both academics and music.

Kim Jongin - Very well known as Kai. A charming, handsome boy. Have a lovely crush on Park Lia. Always protect and be there for her. He have a lots of fans. Also studying in KStar High and a representative basketball player. The one and only son of South Korea biggest company, Shinhwa Group.

Lee Taemin - One of the hottest dancers in KStar High. Kai's rival. A rumour said that Taemin have a secret crush on Park Lia.