I went to IMDB to see if that was a real movie.
But I did find this:
Shrek 4-D (2003)
Plot Summary for
Shrek 4-D (2003)
Lord Farquaad was eaten by the dragon, but his ghost has returned, and he's still evil. With the help of his henchman, Thelonious, he kidnaps Fiona. Shrek and the donkey set out to save her, with help from the dragon, before she goes over a waterfall on a raft.