A self-styled accident choreographer, the Brain is a professional hitman who kills his victims by trapping them in well crafted accidents that look like unfortunate mishaps. When the team's next assignment goes disastrously wrong, Brain begins to suspect that someone else has planned an ‘accident’ on them.
古天樂
as Ho Kwok Fai / Brain
任賢齊
as Fong Chau
葉璇
as Woman
馮淬帆
as Uncle
林雪
as Fatty
Han Yuqin
as Fong-chow's Wife
莫小棋
as Brain's Wife
Lai Cheung-Wing
as Mr. Wong's Father
Peter Lau Wai-Hung
as Triad Boss
Sherwin Ming Tak-Fung
as Buyer
To Hung-San
as Landlord
Tony Lui Siu-Kwan
as Shopkeeper
