In order to find MAK SEI, they go to a village where they see MAK TONG, aka Uncle TONG. Following a clue, they arrive at a second-hand shop to invite MAK SEI to join their detective agency. Ironically, they are instead being pranked. Though KA-KA has gone through the effort to find the eggs requested by MAK SEI, MEI SEI emphasizes that he is not going to join them unless he eats the egg puffs made by Brother HONG in person. Eventually, they manage to fulfill MAK SEI's wish and make him feel the sentimental value that the food holds. Therefore, MAK SEI agrees to join the agency. SAU-NA tells TAK-KEI to stay up all night to look after MAK SEI, which almost leads to catastrophic consequences. With MAK SEI's joining, SAU-NA is hired to investigate an injury on duty case, alleging SILLY CHIU is involved in a fraud. TAK-KEI is harassed while monitoring the suspect, and he is almost run over by a car.… ...
Ma Kwok-Ming
Louis Yuen Siu-Cheung
Eliza Sam
Priscilla Wong
Alvina Kong Yan-Yin
Oscar Leung Lit-Wai
Jacqueline Wong
Lee Tin-Cheung
Joe Junior
Iva Law Wing-Han
Terence Tung
Henry Yu Yang
Eileen Yeow
Lily Li
Joan Lee Wing-Yee
Kitterick Yiu
Wong Wai-Tak
Hero Yuen
Lo Meng
Lee Hoi-Sang
Mat Yeung
Meini Cheung
Derek Wong
Edith Au
Vivien Yeo
Woo Fung
Suet Nei
Pang Mei-Seung
Marine Lee Yee-Man
Nicholas Yuen
Lau Kong
Angelina Lo
Mark Ma
Parkman Wong Pak-Man
Gary Chan Ga-Fai
Tracy Ip
Timothy Cheng Chi-Sing
Nicole Wan See Pui
Chang Kin-Ming
Ken Law Ho-Ming
Janice Shum
Océane Zhu