Lin Wei and Yang Zhe, from high school to university, had a long-distance relationship spanning 1,200 kilometers, and their love was passionate and firm. They once thought that after surviving the distance, it would be a lifetime. I won't marry unless I am, and I won't marry unless I am, this is the most solemn vow in youth. However, entering the society, rushing around in the workplace, the trivial daily necessities and the pressure of reality have quietly eroded the once indestructible feelings. When communication is replaced by overtime, when romance is wasted by rent, when there are differences in the future, the person who once said forever is the first to let go. Only a few months after the breakup, Lin Wei received news of Yang Zhe's marriage. The bride was someone else. It was said that it was the "true love" and "suit" he had met. Heartbroken and nirvana, Lin Wei also tried to move towards a new life, but unexpectedly met the calm and mature Gu Yan. Gu Yan's pursuit was direct and sincere, which healed some of her pain and gave her a stable harbor. The two entered into a seemingly happy marriage, but they had to face the pain and struggles of the relationship between mother-in-law and daughter-in-law. When the past occasionally ripples, and when conflicts in reality follow one after another, how should they sort out their inner emotions and finally find their own happy ending? This is a story about growth, about reality and love, and about how to finally learn to love and get along.