A 23-year-old office lady strives to support her younger brother, left in her care after her parents' sudden accident, while refusing to give up on love. She hopes to keep pushing forward alone until her brother becomes independent. Working late every night, she returns to her dimly lit apartment, facing solitude. As she disappears into her front door, a man begins to move. Her hidden loneliness, intertwined with duty and hope, deepens the story.