HEI is proud of her good memory. She teases YEE with her good memory all the time and everyone finds it unbearable. PANG and YUET MOON recall their sweet love stories in the past and HEI feels jealous. She asks HING to recall their past love stories but HING doesn’t show any response. HEI is enraged. HEI forgets the name of the famous song “Unforgettable”, she becomes absent-minded all the time. Fortunately, HING knows how to help her…