Priss and Diva, 30-something best friends, are taking the holiday of a lifetime in New Zealand. After a spell of relaxation they approach the week-long 'mountain trek' brimming with energy and dangerously horny. It's Priss' idea to see if, in the course of one week, they can involve every member of the 12-person trek in their raunchy adventures. Some are pushovers but others present more of a challenge!