One night, riding home on her motorcycle, Mother Cheng crashed into an oncoming car at a cross street near her home. Because she had jumped a red light, she was at fault. Unable to work, she had also to bear the cost of all her medical expenses. The family's finances hit rock bottom.
屋漏偏逢連夜雨，某一天夜裡，拖著疲累身軀準備騎摩托車回家的鄭媽媽，一不留神，就在快到家的十字路口與迎面而來的轎車相撞，由於是鄭媽媽闖紅燈有錯在先，無法工作事大，還需自負醫藥費，全家生計陷入停滯。