OK, now that we've all seen the trailer (if you haven't , what is wrong with you?!) it's speculation time. I'm posting this in here because I'm not sure that the non-spoiler crew will appreciate a spoiler filled analysis. If this has been discussed then apologies and no doubt I'll have earned a sarky comment from the mods...
Anyway...
I'm thinking more and more that the warehouse sequence is from the opening adventure. Here we'll meet Indy again, Mac, Spalko and the McGuffin. Marshall mentioned that Mac and Indy both worked together for the British and US secret service. Maybe this is something to do with that. I'd guess that Mac is driving the Army car with Indy in the trunk as they try to sneak into Roswell/ area 51/ the warehouse. They get caught. I think the sihouette may well be our first great re-intro to Indy.
Then the Warehouse sequence kicks off. Are they after the Ark? Maybe. Perhaps Indy stops them from getting it. Indy will stop them getting their hands on it. I think it's probably also here he is his first fight with Dovchenko perhaps (in the control room) which ends with him kicking him through the window. During the Warehouse sequence Spalko will learn about the Roswell crate (unless this is teh reason they are there and not the Ark).
Perhaps the Ark is triggered or something else is which results in an enormous bang (the big bang from the AICN reports) to end the sequence.
Spalko gets away with the Skull/ knowledge of the skulls. At this stage Indy is maybe not aware of this. It seems that he goes back to teaching after this. Maybe he figures he is getting past it and the time has come for him to pack it all in.
While he's teaching, Mutt finds him and asks him for his help in finding Marion. They get chased from the college. Indy goes with Mutt to South America.
Once they get there though, I think they have a disagreement and split up. We've already seen pics of them separating. I think Mutt arrogantly believes he can do without Indy's help and goes off into the jungle to find Marion alone.
We see the shots in the trailer of him digging on his own. Looking round at the Warriors. Looking scared.
I think Indy saves him. Scares off the warriors.
This leads to: I thought you were a teacher.
Part time.
From then they are together. We have the campfire scene. Mutt and Spalko end up fighting. Indy ends up dealing with the ants. Indy, Mutt and Marion escape. From here it's a race against the Ruskies to find the kingdom first. They'll find Abner and also come across Mac who is also after the same McGuffin. From here on in the famous 5 are together.
I think the shots of everyone fleeing the temple are as the Temple becomes the starship we've heard rumoured.
What do you think? Thoughts?...