The hero of this story is each cocktail, and also a liquor expert / bartender. A bartender's job is like a pianist's improvisation. Depending on the atmosphere of the place, and according to the physical condition and situation of the person drinking, the recipe of sake will be slightly arranged and served. That's a top bartender. That's why it's possible that the sake you drink in a cozy bar will be delicious no matter when you drink it. Join Hiroshi Onishi, a new bartender, on a vast journey of sake and life.