Li Yunshu, chairwoman of Shengning Group, discovers that He Xiaoyang, a secret her husband He Yanqiu — the live-in son-in-law — has hidden for twenty years, is the culprit who pushed their daughter off a tall building. While biding her time to investigate, she exposes her husband’s crime of embezzling 120 million yuan from the group through companies under Liu Manshu’s name. She humiliates him publicly at the bidding conference, ousts him from the board of directors, and sets a trap for him to steal a fake technical plan. In the end, He Yanqiu, He Xiaoyang and Liu Manshu are all imprisoned. Li Yunshu embarks on a new life with her recovered daughter.