For a three-act plot analysis, put on your screenwriter’s hat. Moviemakers know the formula well: at the end of Act One, the main character is drawn in completely to a conflict. During Act Two, she is farthest away from her goals. At the end of Act Three, the story is resolved.
Act I
Redcrosse and Una head out on adventures pretty optimistically, but things immediately start going wrong when monsters attack and characters they meet betray them.
Act II
First thrown in prison and then almost convinced to commit suicide, Redcrosse finds himself in a time of serious spiritual crisis that only Una and her wisdom are able to cure.
Act III
Renewed and refreshed, Redcrosse defeats the dragon and wins the lady, although not without a few bumps and Redcrosse's tearful departure out on (you got it) another mission. Nothing comes easy in this knight's story.