A story about former lovers reunited after ten years to find their road home follows investment director Gui Xiao and Explosive Ordnance Disposal police Lu Yan Chen. Gui Xiao and Lu Yan Chen were each other's first love. As Lu Yan Chen left to join the police academy, Gui Xiao's family experiences drastic changes. Their relationship from their school days simply comes to an end. When they meet again after eight years, the words "I'll recognize you even when you turn into ashes" make them realize that they still miss each other. Two years later in a snowy border town, Gui Xiao and her friend are stranded. In desperation, Gui Xiao dials Lu Yan Chen's number.