Supermarket stocker Su Qinghe raises a child alone after a divorce, while her ex-husband Zhou Jianye constantly harasses her. Driven to desperation, she has a flash marriage with Chen Shouan, a security guard earning two thousand a month, and takes out all her savings to help him pay off his debts. After marriage, she finds that her husband can always turn danger into safety at critical moments. Until she sees that huge chairman photo at the group annual meeting, and the person in the photo is none other than her security guard husband who washes her feet every day. Facing the questioning, Chen Shouan tells the secret hidden for three years.