Upon arriving at the magnificent estate nestled deep in the mountains with his lover Anna, Kazuma senses an unwelcoming atmosphere that sets the grand residence apart. The household members indulge in hidden eccentricities, which intrigue him following an observation involving the maid Suzuka. Drawn irresistibly to Miyahara Maki, another resident, their mutual attraction ignites the start of a two-day journey filled with unforeseen passions and complexities.