Chen Shi, a live-in son-in-law earning 20,000 yuan a month, has his mother-in-law take his and his wife's salaries after marriage under the pretext of paying the mortgage, leaving them only 1,000 yuan each month. Even buying two steamed buns requires reporting the expense. For six years, he lives frugally without a single complaint. When he asks for tutoring fees for his daughter and gets refused, he discovers that his brother-in-law has bought a new house outright—the mortgage had already been paid off, and his mother-in-law had given him more than a million yuan of their hard-earned money. His wife initially sides with her mother, but after exposing the lies, she finally sees the truth. The couple finally stand together and reclaim control of their finances through emotional resolve, legal action, and solid evidence. Money should be spent on their own family—a lesson they paid six years to learn.