It explores Russia's ambivalent relationship with Europe in the arts on exhibit and depicts sumptuous royal events happened in the past (and thoughts on the Russia later on).
It is hard to contemplate how this one single long shot was made possible with the coordination of so many actor/actresses in so many rooms, albeit almost in the same museum. Spectacular.
Because it is a continuous long shot, i was anticipating some burst at some point -- but it never came -- but it kept me quite concentrated.