Jeongin works the night shift at the coffee shop where he fell in love with his regular customer that always order the same menu and sit at the same spot by the window with his laptop. Chan works from day to night trying to perfect every song he produces. When things doesn't goes the way he wants, he stays up all night with cups of coffee, and a cute boy who works at the coffee shop which happens mostly every night. One works at the coffee shop, ne needs coffee to work, both are coffee addicts, and both fall in love with one another.