The most recent "Shrek" installment, "Shrek Forever After," came out in 2010 ... Shrek is tasked by Farquaad to rescue Princess Fiona from a castle guarded by a fire-breathing dragon.

In short, Shrek Forever After addresses a midlife crisis ... such as the malevolent witches from The Wizard of Oz and the castle-bound derring-do from The Adventures of Robin Hood.

The musical is based on the 2001 film “Shrek” as well as elements from “Shrek 2,” “Shrek Forever After,” and the ... who is trapped in a castle guarded by a dragon.