A young girl called Kim Ji-min is at the time to start college ! So she decides to fly away to the big city Seoul. She settles in quickly but people aren't as friendly back home . She is getting used to the people there and starts seeing her neighbor Kim Jong-In , who is also her classmate. Out of school she starts seeing a different side of him.....A side that no one else has seen . Its not Jongin anymore....Its the Bad Boy Kai