"Time Bank" tells the story of a rebellious young man named Zhang Ran who fell down the stairs after an argument with his father in 2026 and traveled back to 2000 to become his young father Zhang Jianguo. He witnessed the birth of "himself" and was determined to change his destiny. Taking advantage of the traveler's foresight, he seized opportunities such as the development of the west of the city, the building materials trend, and the renovation of old cities. Starting from transportation, he gradually established a real estate group and successfully saved his mother who was about to die in childbirth. In the story, he started a business while raising his son. Finally, as a successful entrepreneur in 2026, he met "himself" who had become an excellent reporter in another time and space, completing the two-way healing and redemption of father and son.