Hana is a nurse beloved by her patients for her devoted care. Always gentle and meticulous in her duties, she finds herself unexpectedly desired by a former patient one day. In that moment, she faces a crisis—torn between her professional role and the rising pleasure she fears surrendering to. Though anxious about being seen by others around her, she gradually becomes aware of hidden desires stirring within. The unfamiliar tension and sense of taboo, so different from her routine married life, awaken new cravings in her body. And so, once again, she boards the morning commuter train, heading to work with quiet anticipation of what—or who—might await her today.