A daughter-in-law encounters her professor father-in-law with an unfamiliar pregnant woman in the hospital. She uncovers his secret: he transferred family assets and embezzled research funds. The Mother-in-law refuses to back down. She, with her son and daughter-in-law, collects evidence, defends her rights legally. The father-in-law faces consequences. The Mother-in-law breaks free from marriage, regains herself, and gains a new life.