Kingdom of the Planet of the Apes

Quick question. So it was a virus that led to the role reversal between the speaking humans and their ape counterparts? Now the apes have the upper hand and humanity is back in the caves. What I don't really get is why everything is in ruins and why there's an escalator in the middle of a forest full of zebras? Speech is crucial for communication, granted, but as the apes now thrive amidst the ruins of human construction I couldn't quite figure out why it was all decimated in the first place. Was there a war? Did I miss it? Anyway, Simian society still claims derivation from "Caesar" and in typical human fashion is just as divided. The apes live a peaceful life stealing the eagle's eggs from precariously perched nests so they can rear them themselves - and the eagles don't really seem to mind. The militaristic gorillas raid their village and drag them all to the seaside resort of "Proximus" where he is trying to break into an human, subterranean, vault. The raid caused havoc amongst the peaceable apes and left only "Noa" to try to free them. En route, he encounters "Mae" (Freya Allan) - an human who can speak, and upon arrival she befriends another talking person "Trevathan" (William H. Macy) who are both expected to help reach the treasures of the vault. She knows what's in there, and with the help of her new friends hopes to salvage what she was sent to retrieve - but without allowing any weapons inside to fall into enemy hands. It takes far too long to get going, this, but once we've established who is who and the story has kicked in, it's quite an exciting tale with some great visuals effects and just a little philosophy to keep it from falling into a trap of franchise mundanity. The acting isn't really up to much, but an enthusiastic effort from Kevin Durand as the menacing leader and some authentic looking acrobatics not seen since Johnny Weissmuller make for an entertaining episode in what is clearly a soap-style plot development where this is but an episode in a what happens next scenario.