The story begins with a regular Joe who tries desperately to seek employment, but embarks on a violent rampage when he teams up with cult leader Uncle Dave. Their first act is to heist an amusement park, only to learn that the Taliban are planning the same heist as well. Chaos ensues, and now the Postal Dude must not only take on terrorists but political figures as well.

Sid and Bernie keep having their amorous intentions snubbed by their girlfriends Joan and Anthea. The boys suggest a camping holiday, secretly intending to take them to a nudist camp. Of course they end up in the wrong place, and meet up with the weirdest bunch of campers you can imagine! Coach loads of sex-starved schoolgirls and bands of hippies all add to the laughs.