Chen Mo's mother, Liu Xiulan, urgently needs surgery. The 200,000 yuan he had prepared to save her life is secretly transferred by his wife, Zhou Qian, to his mother-in-law, Wang Guifen, to cover the down payment on a house for her younger brother, Zhou Hao. When Chen Mo finds out, he rushes to his mother-in-law's home to demand the money back, only to discover that Wang Guifen falsely claims she has already paid a deposit while actually keeping the money for herself. Determined to prioritize her son's marriage, she refuses to return the life-saving funds.