The wheel that never turns. That's how Son Jooyoung sees her world as, and for her, her life has always been on the ground: never rising up, never even experiencing a slice of happiness - and it , because at her age, she is supposed to be having a lot of things a normal girl should have. Life for her is a compilation of workload, and in order to live, she always has to work her off. 

A roller coaster ride. Meanwhile, this is how Lee Jinki views his world as. His life is full of excitement, and though he can't control what is happening, he has his ways to enjoy every bit of it. He is the type of man to be righteous and polite, but he believes a bit of excitement and thrill won't harm, so he really does entertain himself in such a way no one would even imagine of him. 

At one point in time, the two of them met, but wait... why does she want to run away? 

And as Jooyung said she wanted to quit, Jinki held her arm to stop her, and then he whispered, "You think I'll let you go the second time?", sending unwelcomed volts of electricity running through her whole body. Will she be able to run away?