Lion (Ekin Cheng), Huoshan (Jordan Chan), Bill (Michael Tse), Dan Ding (Chin Ka Lok), and Lao Shu (Michael Lam) are five brothers who have been through life and death together. Under the leadership of their mentor Cao Sir (Eric Tsang), they steal special medicine to save children, but are framed and fall into danger of gunfire and hail of bullets. The brothers hold the heroic spirit of seeing death as home and launch a series of investigations and fierce battles. They understand that even if they can't come back alive, it's better than living alone!