When MUI arrives to teach at the primary school, she is stunned by the chaos in the classroom. TO is worried about MUI and secretly visits her at school. He is surprised to find that MUI tames the students by her music. PING has not recovered yet and SAI FUNG puts aside of his dignity showing cares about her. PING is touched. MUI loses control to the students, TO suggests her to resign. MUI refuses. They come across PING in the street. She tells them that she has done the tombstone engraving for FUNG. TO is worried about PING and ask for spending more time with her. SAI FUNG is delighted. But she does not get any better after all. Conversely, she seems to get worse. This is all because of PING’s stepmother CHI and her stepbrother YIP. They are trying to make her go mad in order to take over SAI FUNG’s business for YIP…