Shizuku Kanzaki, estranged son of a famous wine critic, has never had a glass of wine. When his father unexpectedly dies, he learns he must compete for his father's inheritance against Issei Tomine, a man adopted as the late Kanzaki's protege. With the help of a strange and passionate wine stewardess-in-training, he comes to realize a love for the complexities of wine, and begins to develop an understanding of his distant father.