It's sometime in the future. For entertainment rich humans go an experience Westworld, a theme park populated by realistic androids. Here they can do everything they can't in "real life", including rape and murder. Once an android is murdered they are taken back to the repair shop, underground, repaired and memory-wiped, then repeat that same day over again. Basically, there's numerous storylines that they are programmed to play out. If you're familiar with the original movie, that story focused on two buddies who go there for a vacation. It's bad timing because this is when the robots revolt, one of the men is killed and the other has to survive the "Man in Black" (Yul Brynner), who is after him like THE TERMINATOR. In this ten-episode series the focus is on several of the androids. There's Dolores (Evan Rachel Wood), the daughter of a farmer, Maeve (Thandie Newton), who runs a whore house in town and Teddy (James Marsden), who is in love with Dolores. They all start remembering events from their previous "lives", which begins to change their behavior towards the visiting humans. The villain of the show is "The Man in Black" (Ed Harris), a human who relishes in the depraved things he can do, which includes killing children. There's also a larger story which concerns Dr Robert Ford (Anthony Hopkins),. He invented the androids with his deceased partner Arnold and has a secret plan he's unleashing on the theme-park.
This HBO series is a complete re-imagining of the original movie source, as different as the 70's version of BATTLESTAR is as different from the most recent version. HBO re-imagining of the Michael Crichton film is told primarily from the point of view of the "hosts", the androids constructed to amuse humans (sort of like the BBC show HUMANS). One of the best shows on television!