Who Lost the Sense of Boundaries After His Sister-In-Law Got Married?

When her sister-in-law Su Yao gradually eroded her mother-in-law in the name of "family", criticizing, calculating and even slapping her mother-in-law, the gentle Lin Wanrou was shocked to realize that the price of losing the boundary was her mother's life. The younger brother's indulgence eventually led to an irreparable tragedy, and the family was shattered. This is a tragic storm about family boundaries, asking where the bottom line is for indulgence in the name of love.