SPOILER WARNING: The following article contains spoilers for Alien: Romulus . If you have not yet seen the film, proceed at your own risk . After advanced screenings of Alien: Romulus labeled the 2024 movie’s third act as “a big swing,” I knew I was going to be in for a ride.

So when the word “divisive” was thrown around in further conversation on this latest chapter’s resolution, my excitement mirrored the moment I first laid eyes on Alien: Romulus’ eerie popcorn buckets . As a fan of this franchise, I can fully agree that yes, this ending is a big swing, and it’s one that I totally believe works. So if you haven’t seen this latest entry in the Alien movie timeline just yet, you’ve been warned, as I’m about to dive deep into this nest of spoilers to explain why.

Now, let’s take a peek inside the darkness that is Alien: Romulus , and what’s really going on with that ending. Alien: Romulus’ “Big Swing” Ending Thinking back to Alien: Covenant’s absolutely wild ending , the implications of David’s actions are still felt throughout the echoes of future events. Which brings us to the unfortunate demise of Kay (Isabela Merced), expectant mother and friend of protagonist Rain (Cailee Spaeny) in Alien: Romulus The cause of Kay's death is “the big swing” referred too earlier.

Under the advice of Science Officer Rook (Daniel Betts/Ian Holm), Kay uses a substance known as Compound Z-01 to keep herself and her unborn child alive after being attacke.