一位从事建筑业的伙伴尚剑雄（黄浩然）与温和可爱的母亲蓝飞（杨千嬅）已多年为夫妇，共同养育活泼可爱的儿子尚启佳。尚剑雄勤奋地在外面工作，蓝飞则负责照料家庭。生活平稳无事，两人和谐相处。然而一天，蓝飞意外发现丈夫的背信弃义，尚剑雄离开了她，摘下了妻儿的束。
sudden, bluey loses everything and becomes a single mother struggling to raise her son. She must work outside for a living and make monthly payments to cover the huge mortgage. To cope with the financial burden, she decides to rent out their house and meets an attractive tenant named Rong Hao Tian (Zhou Bai Hu). Sparks fly between them, igniting a passionate relationship.
