Plot: TAI-WAI re-encounters an old classmate and starts chatting with him, who instead thinks he is just trying to gloat over his own achievements, and later TAI-WAI learns that his classmate has developed bowel cancer but refuses any treatment. KI LOK has to undergo the supplementary exam, however, she suddenly passes out during the exam, which, according CHI-FUNG's diagnosis, is due to complications resulting from the kidney transplant surgery