A trickster-for-hire, known as the Tricky Expert, is hired to ruin the lives of a father and son by making them think that he's a part of the family.

Andy Lauas Che Man Kit
Stephen Chowas Koo Jing / Che Man Jing
Rosamund Kwan Chi-Lamas Lucy Ching
Chingmy Yau Suk-Chingas Banana Fung
Richard Ng Man-Tatas Yan Chi
Waise Lee Chi-Hungas Macky Kam
Wong Jingas Chiu
Bau Hon-Lamas Mr. Ching
John Ching Tungas Ultimate Tricky Expert
Mannor Chan Man-Naas Yan Chi's Ex-lover
Peter Pau Tak-Hai