The fallen angel Bruce, representing the seven deadly sins of "anger", wanders in the concrete jungle of the city, lost in thought. Under the guidance of an angelic little girl, Bruce launched a fierce attack on his fellow fallen angels: "jealousy", "lust", "gluttony", "arrogance", "laziness", and "greed". He turned the colorful gemstones that symbolize their power into a key to the gate of heaven. However, all that has happened was nothing but a fantasy, and a huge conspiracy has just begun.