Lau's character (Eric) played an intern doctor who met briefly PK by chance in a tourist district when they took pictures for a German tourist. PK, an unwed teen mother, was a hostess at a night club who supported her younger brother and sister as well as his 1 y.o. son. PK ended in prison for 6 months for attacking the father of her son. PK met Eric after her release in prison at a restaurant. They really hit it off. PK planned to spend 3 months with Eric and to leave him afterwards, knowing that her real identity would prevent them from being together. Eventually, she revealed to Eric her real job. The climax of the movie resulted in Eric confronting PK at the club.