Lu Yannan and Meng Shuleng meet by chance and make an agreement to live together to handle their respective family affairs. Meng Shuleng lets go of her lingering attachment to the past, believing that the two are merely partners supporting each other. However, she gradually comes to feel Lu Yannan's thoughtful and attentive protection, and her heart is slowly touched. Rumors and misunderstandings drive a wedge between them, prompting Meng Shuleng to leave temporarily. Lu Yannan finally faces his true feelings, crosses the distance to confess his love to her, and gives her his wholehearted support. The two clear up every misunderstanding and confirm their feelings for each other. With the blessings of their family and friends, they embark on a life together, turning a simple written agreement into a sincere love that lasts a lifetime.