Sehun's daughter, Dalrae is kidnapped three days before her 5th birthday. Desperate to find her out, Sehun seeks help from his detective girlfriend. Fingers are pointed at Dalrae's mother, Jung Misun, Sehun's ex-wife. The case cuts open old wounds and brings out mysteries as it takes twists and turns down the road and the ex-lovers find themselves back in the crossroads of loving and leaving.