It might be a couple hundred years before they ooze the last bit of milk from the green cashcow that is Shrek, and with the third sequel in the works, no one’s holding their breath. Anyways, Alex Litel seems to have discovered a copyright pre-registration for Shrek Goes Fourth, which reveals some basic plot elements of the fourth film in the franchise.

“After challenging an evil dragon, rescuing a beautiful princess and saving your in-laws’ kingdom, what’s an ogre to do? Well, if you’re Shrek, you suddenly wind up a domesticated family man. Instead of scaring villagers away like he used to, a reluctant Shrek now agrees to autograph pitch forks. What’s happened to this ogre’s roar? Longing for the days when he felt like a “real ogre,” Shrek is duped into signing a pact with the smooth-talking dealmaker, Rumplestiltskin.

Shrek suddenly finds himself in a in a twisted, alternate version of Far Far Away, where ogres are hunted, Rumplestiltskin is king and Shrek and Fiona have never met. Now, it’s up to Shrek to undo all he’s done in the hopes of saving his friends, restoring his world and reclaiming his one True Love.”

The film is due out May 21, 2010.