Myungsoo was a young passionate barista working at a small coffee stall in the building of an architectural complex. 

One day he meets a young passionate interior designer.

Needless to say, Myungsoo finds himself learning more about coffee than he did during his training.

Barista:

The skilled person who is responsible for what goes into your cup. These well trained individuals know the exact combination of ground coffee, extracted to perfection through a well maintained machine. If you want your coffee milky then they can do this too, knowing the correct temperature to get the milk steamed and foamed according to your drink of choice. 
The best baristas will have in-depth knowledge of their full tool kit including their machines, grinders and coffee origins.

( Definition from here )