Wu is deeply moved when Hoi reassures her he is not going to leave her alone. A prison doctor collaborates with the drug dealer, testing new drugs on prisoners who are awaiting their execution. Wu suffers from spasm after taking the drug. Wu attempts to flee during the skirmish caused by Wan and other women inmates. She hears the conversations between the prison doctor and the dealer, and realizes she becomes a lab rat. Wu threatens the doctor and demands him to find her a scapegoat. The doctor poisons the food given to Nga and causing her to suffer from diarrhea. Nga is told that she is diagnosed with stomach cancer, and is just given two months to live. Nga is shocked. She leaves Leung a message when she decides to go somewhere else with her son together. She encounters stormy weather. Leung manages to catch Nga up. On the day of execution, Nga has a heavy heart as she is not able to save Wu at last.