Usually, when Hollywood makes a movie about a killer robot, it's the villain. From Westworld to Terminator to The Matrix to M3gan, murderous robots make great villains, in part because they're so morally easy to dispose of and destroy. After all, they're just malfunctioning machines.
It's hard to discuss Companion without revealing some spoilers, but the movie's biggest twist comes in the very premise, revealed in the first act: It's a movie about a killer robot—who is also a sexbot, and the movie's hero. It's a startling, clever, blackly funny sci-fi/horror thriller about feminine freedom, AI personhood, and the perils of taking intelligent machines for granted.
Companion starts with a classic rom-com meet cute: A boy named Josh (Jack Quaid) meets a girl named Iris (Sophie Thatcher) in a grocery store. They lock eyes, and he awkwardly, amusingly, knocks over an entire display of oranges. It's goofy, endearing love at first sight, and the next time we see the couple, they're in a car heading to a weekend retreat at a luxurious lake house owned by a sketchy Russian (Rupert Friend).