As if you could forget, the Wolfpack is back. We've had one main trailer for The Hangover Part III and now here comes the second, which boasts some new footage and a proper idea of what the plot is about, beyond “the guys take a road trip.” It would appear that, in the wake of his father’s death (and even before) Zach Galifianakis ’ man-child Alan has gone off his meds, acting weirder than ever. Which is saying something, given that it’s Alan. So Pack pals Phil ( Bradley Cooper ), Stu ( Ed Helms ) and Doug ( Justin Bartha ) stage an intervention, aiming to whisk him off to rehab at New Horizons. Yet en route, they’re ambushed and cornered by John Goodman ’s vengeful villain, who is chasing Mr Chow ( Ken Jeong ) for stealing a hefty haul of cash. Holding Doug as hostage, Goodman sends the lads out to find Chow and bring him in, a mission that will take them to Tijuana and their old stomping ground of Las Vegas, among other places. So while all the ads so far have promised