In a futuristic setting, Kowloon Walled City harbors individuals who cherish the bygone era of Hong Kong. Real estate agent Reiko Kujirai craves modernity amidst the nostalgic haven, unlike her colleague Hajime Kudou, who revels in the city's old-world charm. Despite their constant clashes over preferences, the duo surprisingly finds solace in each other's presence. A mischievous prank leads to an unexpected moment between them, leaving Hajime flustered and apologetic. Intrigued by his sudden behavior, Reiko delves into her own forgotten past, unearthing startling revelations.