Chen Lan, an old man who was a university professor of German and was proficient in Berlin-accented German, was neglected and humiliated by his son Jiang Wei, daughter-in-law Liu Min and granddaughter Jiang Yue for a long time. After being humiliated in German by his granddaughter at a family dinner, he fought back on the spot with pure Berlin-accented German. She immediately left the home where she had been depressed for ten years, showed off her dusty black trust card and checked into the Ritz-Carlton Hotel. She initiated legal proceedings to recover the property, freeze the funds, and revealed that the German scholarship her granddaughter received was actually funded by a fund in her name. In the end, she regained her identity and dignity, reunited with her old friend Lin Zhensheng, and started a new life.