He Wei becomes suspicious after noticing his wife, Qin Yueran, acting unusually nervous and discovering unfamiliar marks on the car window. Subtle clues during a car wash, unusual evidence found while servicing the car, and mysteriously deleted dashcam footage deepen his suspicions. As he follows every lead, he catches his wife sharing an unusually close bond with a young boy named Gao Xiaochuan. At the baby's full-month celebration, surrounded by guests, He Wei slowly rises to his feet. In his hand is not only a test report, but also the evidence that is about to reveal the shocking truth. The drama is adapted from the story "My Childhood Friend Borrowed My Car for Three Days, and It Came Back with Two Hundred Jin of Iron Inside" by Qiqi37.
