A deep bond born from the blood connection between mother and son unfolds over 480 minutes, escalating into forbidden emotions beyond love. Hiroaki, constrained by his inability to feel romantic desire for anyone but his mother, seeks pure love—yet it spirals into dangerous obsession. His mother's expressions of climax shake Hiroaki's heart to its core. As love and lust intertwine, their tragic, fleeting journey reveals escalating incestuous passion. Torn by the conflict of abandoning her role as a mother, their relationship grows ever deeper.