Ordinary worker Chen Sheng struggles to raise money to treat his adoptive father, and meets Lin Songning, who is unwilling to accept an arranged family marriage. To solve their respective dilemmas, the two agree to fake being a couple. As they spend time together, genuine feelings gradually grow, and they face life's challenges together. The seemingly ordinary Chen Sheng has an unknown past; he stays true to his heart only to make an exception for her, and ultimately the two hand in hand protect and stay with each other for a lifetime.