After a late night and a few too many drinks at the Duke Jake and Mal are mugged on their way back to Mal's place. While the mugging is going down Jake tries to fight off the robbers. Of course this drunken attempt at self-defense just doesn't really work and instead leads to both Jake and Mal getting a bit of a beating (and black eyes).
The next day, instead of reporting the theft to the police and dealing with the resulting embarrassment of such an activity, Jake and Mal undertake their own investigation to track down the muggers.
When Jake and Mal realize that their assailants are involved in more heinous crimes than just stealing wallets from drunk guys they feel obliged to call in both Leslie and the hot Crown prosecutor.