I hope you got all that, because you have to concentrate in the movie to pick it up. Spicing up the concoction is a mature woman who is just as deadly as Ethan Hunt, Ilsa Faust (Rebecca Ferguson), who acts as Cruise's love interest. Looking equally at home in a cut-to-the-waist yellow silk evening gown or in an unmistakably British pea-souper, Faust is written in such a way as to enhance Cruise's - now looking a bit jowly despite the ripped abs - credibility as the loner Hunt. She emanates a grown woman's passion and loyalty and the effect is rather touching amid the free-diving stunts and the motorcycle chases. If the movie has any theme, it is that friendship is stronger than any other emotion. (Except perhaps greed.)
Cruise's IMF sidekicks include the believable Benji Dunn (Simon Pegg), a Puckish nerdy Brit, and William Brandt (Jeremy Renner), a straight-up-and-down US spy operative with a smile like a rubber mask. Added to these two worthies is a pudgy and under-utilised Ving Rhames as Luther Stickell. On the other side are a coterie of expendable thugs. Their leader, Lane, has a whiny, irritating voice that was possibly the main reason the actor was chosen for this role, though physically he is lithe and threatening.
A lot of the movie takes place in London but there are also stopovers in Vienna and Casblanca (Morocco). It's all a bit predictable but the way the backstory meshes with events in the real world makes the movie interesting on a purely sociological level, i.e. intellectually. A putative elite hit squad of the kind the US put together in the aftermath of 9/11 - though one here set up by the wily Brits - is an interesting notion that might be further explored. In the movie the aim of the bad guys is to get their hands on a multi-billion-dollar horde of cash stored in various bank accounts around the world. Money speaks. I guess nothing really changes in the end.