Shen Chuan and Su Man married out of gratitude for a kindness shown to their families by the previous generation. After spending thirty years together, their feelings gradually faded. Given another chance to return to the past, Shen Chuan refuses to remain bound by their relationship and chooses to let go, heading to the factory branch south of the city to build his career. With his own abilities, Shen Chuan establishes himself, while Su Man begins to seriously reconsider their marriage. After misunderstandings and workplace turmoil, the two resolve all their emotional entanglements, face each other honestly, and each sets off toward a life better suited to them.