Lu Chuqiu goes to a bank to withdraw new banknotes as a gift for her son Lu Shixu's girlfriend. Instead, she is repeatedly humiliated and obstructed by bank clerk Lin Zhenlong and manager Wang Xuemei, eventually being forced to transfer three hundred million yuan. Later, Lu Chuqiu discovers that her son's girlfriend is actually Lin Rouzhi, the materialistic older sister of Lin Zhenlong. Although she endures the humiliation, she chooses a smarter way to fight back. During her birthday banquet, in front of wealthy elites and influential families, she exposes the family's many wrongdoings one by one, including currying favor with powerful figures, misappropriating public funds, and abusing their authority to bully others. In the end, all three family members are brought to justice and receive the punishment they deserve.
