Here is the movie simplified:
God exists because:
Both the big bang and the book of genesis started with a flash of light (Pay no mind to the fact this is incorrect and genesis starts with the creation of heaven and earth, light comes later)
All animals have existed the same way forever (No evidence to this is given besides a poorly animated clock representing time.)
God is the only way to morality (This is Not even "evidence" just a completely wrong claim that ignores secular moral systems such as Utilitarianism and Natural Rights)
And the rebuttal by the horribly inept philosophy teacher?
"Steven Hawking was an atheist, so I am right."
Also:
Science is a religion, apparently.
Atheists apparently are just atheists because they are sad, not because of a personal belief system or scrutiny of antiquated works.
Not getting someone emergency medical attention because of their faith is completely valid and absolutely not indirect manslaughter.