A Sunday school teacher professes Nietzsche's Zarathustra as being "the Bible" while teaching the metamorphoses of the human soul: the camel becomes the lion becomes the child; these are all becoming the ubermensch. This becomes the theme for the final musical number of the first act. Just to top it off, Nietzsche's characters adds, "this is totally not about Nazis!"
The second act deals more with a, to use my friend's term, "Mars Hill" kind of faith. The teacher from the first act is hounded by a youth pastor named Kyle; he's cool and hip and fucking loves Jesus! Due to the notion of eternal recurrence, Nietzsche crosses paths with the teacher, and they view each other's worlds from different perspectives. I'll be honest, I started to get a little lost during this part of the musical, but I enjoyed it nevertheless.
The final message to the audience is presented through a long musical number urging them to become who they are, and not be who they are--an impossibility, it seems. Okay, now it's time to go read some Nietzsche; maybe then it will make some sense to me.