Something happened and their bodies are switched.

Kim Jongin is the usual careless kingka that always surrounded by high-pitched girls, not only for his looks but maybe because he's the school's pride, the school's cocky dancing machine, a child prodigy. Not to mention he is a ing rich bastard, living alone in a big apartment, fully obvious about his heart, getting him the title of 'living machine'.

While,

Do Kyungsoo is the new smartass, the nerd, the goody boy, the teachers pet, or all that you named it, but unfortunately, no one knows about his angle's voice, they just know 'the poor scholarship student' is preparing something secretly in his private music room. And the most trending question in SM High happened to be 'how can Kyungsoo gets a special music room'

But,

They crossed each other line.

And something strange happened..

Their souls switched, because of a small crush that made the two unconcious.

Will they be able to control each other body?

Or they will keep remain in the wrong body?

With the only clue they knew to go back is 'make him happy'.