After wrapping up the Médoc Marathon, Shizuku stays in Bordeaux, seeking clues behind what motivated his father Yutaka to delve into wine. What was the bottle that convinced him to walk the "path" to wine for all eternity? But meanwhile, the wine division Shizuku works at is in mortal danger! In order to stay alive in advance of a blockbuster company merger, the team must discover an under-the-radar sparkling wine that has the power to transcend Champagne itself!