Su Jin, a gentle and quiet housewife, often feels an inexplicable emptiness in her heart.
In a modern city, there is a seemingly peaceful middle-class family life. Her husband Gu Yan has a successful career and is considerate to Su Jin, but Su Jin always feels like a perfect decoration. When Su Jin was sorting out her husband's old things, she found a dusty diary that recorded her husband's passionate love and great grief for a woman named "A Ning". What shocked her was that everything about An Ning was strikingly similar to her...
