C.J (aka Penny Craig) and Alex Stirling join the rest of The Wedding Party at the airport for their flight to America and Las Vegas.
Rob Carter, the prospective groom, spoils the fun by making his groomsmen guardians of his future wife's bridesmaids.
Orders to protect the women against the male population of Las Vegas while keeping their hands off them was easy to agree to; but then there was the animosity between C.J and Alex, the bright lights and alcohol filled nights, slot machines, shops, and that Fluffy Flamingo...
A cacophony of diverse distractions ensue that will have their repercussions realised when the party returns home, to their mundane lives.
Love, weddings, babies, and divorce!
Who would believe that a weekend trip to Las Vegas would herald - What Happened in Vegas? For all these lovely people...