Years ago, due to a sudden upheaval, Zhou Chengchuan reluctantly parted ways with the person he loved, taking on the heavy burden of caring for his niece alone and steadfastly holding his ground at the grassroots level for twenty years. Meeting again, his former lover is now a project manager, and past misunderstandings frequently create barriers between the two during old city renewal work. As the project progresses, the suspicious details of a long-sealed past gradually emerge. Through working closely together, the two slowly clear away layers of fog, sort out all past misunderstandings, and stay true to their hearts to protect the safety of the masses. After enduring numerous trials, having unlocked their emotional knots, they hand in hand rush towards a warm and fulfilling life belonging to a family.