A bored and domesticated Shrek pacts with deal-maker Rumpelstiltskin to get back to feeling like a real ogre again, but when he's duped and sent to a twisted version of Far Far Away -- where Rumpelstiltskin is king, ogres are hunted, and he and Fiona have never met -- he sets out to restore his world and reclaim his true love.

Shaun doesn't have a very good day, so he decides to turn his life around by getting his ex to take him back, but he times it for right in the middle of what may be a zombie apocalypse... But for him, it's an opportunity to show everyone he knows how useful he is by saving them all. All he has to do is survive... And get his ex back.