The best game I know in the clarity of the explanation of “Scenes”:
– Trollbabe (2nd edition) devote a lot of pages to it
– Spione ha very clear mechanical rules about them
– Primetime Adventures assumes a lot of previous knowledge about the way scenes works in TV, but the mechanical rules are very clear.
– Bacchanal/Bacchanalia has a very clear “leave a scene / enter a scene” mechanic.
(caveat: I stress “that I know”. This is more a “among the games that use scenes in a clear way, these are the ones I know better”, so there are probably a lot of other games around that are better than these, but I don’t know them)