Stage 1 – Set Up
Indiana Jones and Marion are introduced as characters. The “MacGuffin” of the Ark is established, and that the character Arnold Toht is hunting for it. This sets up the central conflict of the film where there are two independent opposing parties seeking the Ark.
Stage 2 – Complicating Action
We learn that the Nazis, our antagonists to out protagonist are seeking the Ark. They are established as a threat to Indiana. He has to now find the Ark whilst avoiding conflict with the Nazis, and stopping them from obtaining the Ark, which will inevitably lead to action.
Stage 3 – Development
Despite Indiana using his best abilities and discovering the location of the Ark, the Nazis inevitably take it. The action is intensified and the stakes are increased. Where Indiana is now no longer obtaining the Ark before the Nazis but taking it off them.
Stage 4 – Climax/Resolution
Despite his best efforts, Indiana and Marion find themselves captured and restrained, whilst the Nazis’ are in unchallenged position of the Ark and are about to open in.
The Ark is opened, Indiana, through is knowledge of ancient artefacts, tells Marion to close her eyes. The opening of the Ark proceeds to destroy the evil Nazis.
The Ark is hidden never to be seen by humans again.