Suzu, a devoted mother celebrating her son's success, embarks on a steamy hot spring trip where hidden desires awaken. Amidst innocent celebrations and unexpected encounters, simmering tensions unravel into secret passions she never imagined. Forbidden allure and clandestine passion paint a seductive tale beneath the veil of familial bonds, blurring the lines of temptation and restraint in an intoxicating dance of desire.