British/ Australian comedy following a bridegroom & his three best men as they travel to the Australian outback for a wedding. When British boy David (Xavier Samuel) announces his upcoming marriage to Australian Mia (Laura Brent), his London friends, Tom (Kris Marshall), Graham (Kevin Bishop) & Luke (Tim Draxl), reluctantly agree to accompany him to remotest New South Wales for the wedding. On their arrival, the boys find themselves at the mercy of Mia's strict senator father, Jim (Jonathan Biggins), his flirtatious wild-child wife, Barbara (Olivia Newton-John), & Mia's drop-dead gorgeous but sexually ambiguous younger sister, Daphne (Rebel Wilson). In their fumbling attempts to adapt to their surroundings, the friends have various run-ins with the locals, including crazed drug dealer Ray (Steve Le Marquand) & a large Merino sheep.