眞島秀和が主演を務めるグルメドラマ。眞島は、出張帰りの新幹線でご当地グルメをテークアウトして“居酒屋新幹線”を楽しむ、損保会社の内部監査室で働くサラリーマン・高宮進を演じる。日帰り出張で全国を飛び回っている高宮は、駅弁や郷土料理、地酒やスイーツなどを新幹線で堪能しながら、至福の時間を過ごす。
A gourmet drama starring Hidekazu Majima. Majima plays Takamiya Susumu, a salaryman who works in the internal audit office of a non-life insurance company, who enjoys the "Izakaya Shinkansen", taking out local gourmet food on the Shinkansen on his way home from a business trip. Takamiya, who travels around the country on day-trip business trips, spends a blissful time enjoying ekiben (boxed lunches), local cuisine, local sake, and sweets on the bullet train.