YI is convinced ON is her father but she promises him not to tell anyone. According to her mother, CHING-WAH, her father went to the same secondary school with her and that she immigrated overseas shortly after their relationship had started. When she returned a few years later, he was about to marry another girl. This was how she decided to raise YI on her own. Later, as she heard, YI’s father had died in a traffic accident. ON manages to find WAH’s contact number at last but his behavior raises PO’s suspicion. PO sympathies with YI, accusing her father of dumping her. ON feels very uneasy as she goes. ON chills out with WAN and TIM. WAN suggests him to go for a DNA test.