Nobody on screen says the title. It's a Greek type of ritual sacrifice once thought to produce bees, which appear sometimes herein for an analogy. That's about the only reason I felt the need to look at the movie's Wikipedia page, because the plot's easy to remember.
Cousins Teddy (Jesse Plemons) and Don (Aidan Delbis) kidnap pharma CEO Michelle (Emma Stone) and hold her in Teddy's house. Teddy is fully convinced that she is a high-ranking alien from the Andromeda Galaxy responsible for the slow ruination of many things for humanity. He demands that Michelle arrange a meeting between him and the Andromedan emperor on the lunar eclipse, which comes four days after the kidnapping. The longer Michelle doesn't do as Teddy bids, the less inclined he is to choose civility over rage. Slightly complicating matters are periodic check-ins by deputy Casey (Stavros Halkias), Teddy's former abusive sitter.
