YUEN CHO ON is a reporter and is instructed to report the case of rapping relating to "Call-and-make-friends". In the work, ON comes across the victim CHUNG LAI HUNG. On the other hand, ON's good friend, YU WING CHI takes vacation in Hong Kong. As ON is too busy, CHI feels bored. Thus CHI makes phone call to find new friends. Unluckily, CHI is killed by a maniac. ON questions her ex-boyfriend CHIM TIN YUNG, who is responsible for the investigation work of this case, YUNG keeps his lips tight. ON decides to join the game and finds the killer herself.

ON dates with several persons while TANG CHI LAP - the killer, is also among them. ON is nearly raped by one of her new friends and she is saved by LAP. Love germinates between ON and LAP. However ON discovers that LAP is the killer. When LAP finds ON suspecting him, he kills LUK WING KAM and blames ON as the killer……