In the police force, "Death Investigation Extension" or "D.I.E." was established to accommodate those who have been sent away by their supervisors. As everybody knows, members of the Extension are to investigate unsolved cold cases. Yue Chi-Long, who has cracked a large number of difficult cases by extrasensory means, is assigned to the D.I.E. because his superiors find him strange for falling asleep constantly on the job. New appointee Ying Jing-Jing is a good-looking girl but she takes an uncompromising stand over every case she deals with. Initially unaccepting of a division made of incompetent detectives, she is tricked into staying by her former supervisor, who claims that she was placed there to eventually replace the head and whip the team into shape. Chi-Long proves himself a capable detective but has a laidback attitude. The relationship between Jing-Jing and Chi-Long is deteriorating day by day, but also improving in a way... Long lives with his elder sister, Yue Chi-Ching and his Aunt Sa, after his mother died and his father disappeared. While investigating an old case, Chi-Long gets to find his long-lost father Yue Tai-Hoi. While Chi-Ching is accepting, Chi-Long is angry at his father, going as far as arresting him when evidence hinted that Tai-Hoi may be related to a murder. Through close collaboration with Chi-Long, Jing-Jing has gradually developed affection for him. Her neglected but two-timing boyfriend Shing Ka-Tsun soon seals the decision for her, until Ka-Tsun's new girlfriend is murdered and he is forced to flee. When everything settles, Jing-Jing decides to start a relationship with Chi-Long, despite knowing that Ka-Tsun still loves her. However Chi-Long has started to try to avoid her without rhyme or reason, feeling confused about what is happening Jing-Jing decides to do some probing and is shocked to discover that Chi-Long has been dogged by a female ghost called Siu-Yi, who had been preventing Long from developing romantic relationships. Later Siu-Yi tells Long that his life clashes with Jing's, and he will cause her to be killed if they are together. Long ignores this line until Jing gets hospitalised after an explosion. Chi-Long breaks up with Jing-Jing, leaving her heartbroken, until she is on a case. But Chi-Long and Jing-Jing know they are still in love with each other, leaving them in a painful and awkward situation...
Cast
The Yue Family
The Ying Family
D.I.E. (Death Investigation Extension) Unit
Other Cast
Alternate ending
The original ending of the series has Roger Kwok's character, Yue Sir, dead as a result of the car accident. However, the TV audience voted for a happy ending. As a result, another ending was created by TVB. The alternate ending is of "Mo lei tau" style of comedy.
Siu Yi transports members of the D.I.E. team to the moment before the car accident; the driver involved is Bobby Au-Yeung's character Chai Foon-Cheung from 2006's Dicey Business.
Members of D.I.E. try various ways to stop Chai Foon-Cheung, but to no avail.
At the last moment, Chai Foon Cheung stops the truck and says to the D.I.E. team that he feels moved by their sincerity to save Yue Sir from dying, thus asking them to arrest him for bootlegging movies.
Yue Sir and Madam Ying are in the hospital room, with Yue Sir holding their newborn son. Yue Sir comments why their son weighs 14 lb and a head full of hair. Siu Yi appears telling them that their curse has been taken care of, and the reason that their son is so big is because she fed him a bowl of rice before he was born.
Neither endings address the fate of criminal Dai Hao-Ying, who started the series as a Triad boss and ended up being a petty thief.
