[From the downtime] 30 meters under the ground, the prison, where it is impossible to escape; US prison, "underground hotel". Only people who like to live in this place secluded from the Sun of Life are called him by another name: "The Under Grand Hotel". Absorbated sex in search of pleasure, calling for silence, Erie (prisoners leader) looks not on men she rapes Every night, and on a lonely man. Norman. Norman, who continues to try to harm himself as a result of injury, a kind doctor who cares about him, Wang and Erie, who is brutally falling in love, which is more like hatred ... What happens when these Different feelings will go off? In a closed world? The long-awaited and mature story of the love "Under Grand Hotel" starts from the story of Sadahiro Miki!