Even though Ranmaru Oumi spends his wedding night on an extravagant European cruise, he is not pleased. His new marriage is loveless, staged only to create an alliance between two yakuza clans. To make matters worse, Ranmaru fights with his bride, leading them to separate for the rest of the day. As he wastes his time at the bar, Ranmaru meets Albert Valentino, an Italian man obsessed with Japanese culture. As they bond throughout the evening, their relationship blooms into something more.