Vir Leung has just joined the most notorious triad society "Si Hing Lung" to show his determination of quitting his part-time bullying business. To prepare himself for promotion, he enthusiastically participates in the on-the-job training, sharpening such professional skills as "bottle breaking", butchering, shooting, case planning and organizing pre-action rehearsals.

Meanwhile, his wicked partners are tricking one another secretly for the legendary position - sitting next to the Headman. Is Mr Leung lucky enough to survive this crisis? Would he be chosen for the post and envied by his colleague?