SIU-SZE returns home and finds that nobody is there. Her mother-in-law was sent to the hospital because of an acute disease and KWOK-LEUNG scolds SIU-SZE for her carelessness. SIU-SZE decides to put aside the dance studio matters and take care of her mother-in-law wholeheartedly. CHI-LUN is making preparation for another advertisement but CHU LEI is late for a long time. CHI-LUN goes to the dance studio to look for CHU LEI but CHU LEI asks him to go picnic together at the park. CHU LEI is out of her mind after meeting a street performer at the park. CHU LEI returns to the dance studio and she recalls the time when she was dating with her secondary school boyfriend ROBERT. CHI-LUN and SIU-SZE go to visit CHU LEI at the dance studio. They discover that CHU LEI is behaving abnormally. CHI-LUN worries that CHU LEI has broke the advertisement contract of the tonic liquid. SIU-SZE asks CHI-LUN to help taking care of CHU LEI……