Zhao Yong and his wife, Sun Yan, work in a factory assembling screws. Though Shao Jie often helps them financially, Sun Yan grows greedy when she learns about the election for workshop supervisor. Determined to win, she pressures Zhao Yong to help oust Shao Jie. Guilt-ridden over betraying their benefactor, Zhao Yong refuses. Enraged, Sun Yan tampers with the machine settings near Shao Jie’s station, causing defective parts. She then publicly blames him. Caught off guard, Shao Jie is left speechless and defenseless against her schemes.
