Miwa Kurushima and her colleague Yukari Higuchi are on a mission to find a skilled individual to run the counter bar at the prestigious Hotel Cardinal. The hotel’s chairman has one strict requirement for the potential hire: the bartender must be able to craft the ultimate drink, known as the “Glass of God.” Due to Miwa’s limited understanding of this requirement, her search becomes arduous, as none of the candidates meet the chairman’s exacting standards.

Nestled in a quiet, secluded spot among the bustling alleys of Ginza is Eden Hall, a cozy bar maintained by Ryuu Sasakura, a prodigy mixologist who intuitively knows the perfect drink to ease his customers’ worries. Every glass he serves is garnished with humility, offering much-needed solace to people from all walks of life in their times of need.

In a chance encounter, the chairman is left speechless by Ryuu’s exceptional bartending skills and becomes determined to have him join Hotel Cardinal. He becomes one of Ryuu’s regulars, trying daily to convince him to leave Eden Hall. Despite Miwa’s assistance, recruiting this particular bartender proves to be more challenging than expected.

Knight Laios Touden leads a small party through a vast and perilous dungeon filled with deadly monsters and treacherous traps. Thanks to advanced magic, adventurers can sometimes be resurrected, allowing them to learn from their failures and attempt the journey again. However, when a fearsome dragon devours Laios’ sister, Falin, she uses her magic to send him and his companions to safety, sacrificing herself in the process.

Determined to rescue Falin before she is fully digested, Laios presses on despite being short on resources and allies. Though some party members abandon him, two remain loyal: the elven mage Marcille Donato and the halfling locksmith Chilchuck Tims. With little money and supplies, the group faces the threat of starvation until they encounter Senshi, a dwarven warrior with a passion for cooking and safely preparing meals from defeated monsters.

With Senshi’s culinary skills, Laios and his companions navigate the dungeon, blending survival, monster cuisine, and newfound camaraderie on their quest to save Falin.