Close yet far, you are my 'familiar stranger'. <Gift of Existence>: 'Existence', a middle-aged man on the cusp of his 50th birthday, discovers his hair falling out strand by strand and is disappointed by his reflection in the mirror. He has affairs with other women behind his wife's back, but never spends the night at his lover's house. He always returns home. <Frost>: 'Frost' recently lost her boyfriend 'Jeonggu'. Some time has passed, but she still doesn't understand why he suddenly left her and chose suicide. Her mother, who visits her, is only noisy as if not allowing her time to grieve, causing 'Frost' distress. <Waiting in Memories>: There is a world where time flows in the opposite direction to the world we live in. 'Soyoung', who feels her existence fading as she ages, gets a chance to live again as a child in another world she visited by chance. While she enjoys happy times there, her resentment towards life gradually subsides... <The Lost Ones>: 'Junwoong', who had decided to end his own life, receives a phone call. News that his father has Alzheimer's. He postpones his suicide for a moment and returns home to see his father for the last time. As he walks following his father, 'Junwoong' glimpses a hidden sincerity.