Raiders of the Lost Ark in 3 Acts (feat. prologue):

The Problem: The Nazi's Will Get the ARK of the Covenant.

It's been a little bit since I've seen this last... but here it goes.

Act 0: The prologue to Raiders introduces us to Indiana Jones, and the world he lives in, but it has nothing to do with the "problem" of the film. So I'm safely discarding it as Act 0.

Act 1: The Ark is explained and Indy takes the job to go find it. He finds Marion and she becomes his g** d*** partner.

Act 2: Everything leading up to Indy getting the Ark, but the Nazi's steal it from him.

Act 3: Indy chasing down the Ark, and the Nazi's destroying themselves with it.

Wow, that was pretty basic. I must be forgetting something. A visual timeline would help me make sure I'm on the right track. Can someone tell me I'm wrong here?