Trust me. Just don't do it. It is to the Indy Jones franchise what Phantom Menace was to Star Wars.
It makes The Mummy 2 look like Raiders of the Lost Ark.
Do a search for Harrison Ford/Shia LaBoeuf slash fic on the Internet and you will probably find better plots and characters.
Costumes, set design, plot, script, acting, directing, editing, even music... the movie fails on every conceivable level. And it doesn't even fail in an interesting or easily mocked way (OK, maybe when Shia is swinging monkey style through the jungle), just in a boring, plodding, oh my God is it over yet kind of way.
Don't go see it. You'll regret it. Trust me.