Kim Jongdae and Park Nawoon(You) have been friends since forever.

Both of you separated after middle school with different path.You bring yourself abroad to pursue your dreams.

As years passed , you finally went back to South Korea and guess what? Jongdae was acting cold when he met you again after lost contact of you for years.He's been acting strangely towards you after all this years.What could it be? You're the one who'll be figuring it out.