The following contains spoilers for the "Silo" season 2 finale, "Into the Fire."

Apple TV+ is home to many of the best sci-fi shows currently on the air. Whether it's the alternate history joy of "For All Mankind" or the joy of watching Lee Pace as an immortal emperor fight a bunch of assassins while completely naked in the epic "Foundation" or the (relatively) more down-to-earth "The Parting," there is something. for every kind of sci-fi fan on Apple TV+.

Now, one of the streamer's best sci-fi shows (and series overall, for that matter) has wrapped up its second season — "Silo." Created by Graham Yost and based on the book series of the same name by Hugh Howey, The Silo takes place in a dystopian future where the remnants of humanity live in a giant underground silo hundreds of stories high. Narratively, the show centers on Juliet Nichols (Rebecca Ferguson), an engineer who becomes embroiled in a massive conspiracy as she slowly uncovers the many mysteries of the silo (aka Silo 18). It's a phenomenal series full of intrigue and superb world-buildingwith the titular silo feeling like a place to live.

The idea of ​​a show where the remnants of humanity live surrounded by walls and the truth about their world and the origins of their cities is a secret for the protagonists to uncover (in a basement, no less) makes Silo good random attack on titan live action series.

With Silo being renewed for both a third and fourth season (with Season 4 serving as the last), there's still a lot of story to cover if the show intends to fully adapt the rest of Howie's novels. This is especially true since Season 2 ramped up the mysteries, introducing a major rebellion plot, a new silo (aka Silo 17), artificial intelligence, and even time travel. In short, a lot happened this past season, and the season two finale, in particular, offers some answers while raising many more questions.

Whether you're confused about the latest Silo twists or just want to relive the shocks, thrills and surprises, we've got you covered.

Arguably the biggest reveal of the season 2 finale, titled "Into the Fire," involves what Lucas Kyle (Avi Nash) found in the tunnel at the very bottom of the silo. This is the same tunnel that Juliet's boyfriend George Wilkins explored before he died - a place that only he, Salvador Quinn and the late Judge Mary Meadows had reached before Lucas. As it turns out, the tunnel leads to a door securely guarded by the same entity behind the legacy found in the secret IT vault.

The voice tells Lucas about the protective procedure, a contingency plan that allows this unseen voice to literally kill every person in the silo with a vent. This changes everything about the show and opens up a whole new can of worms. Who exactly is in charge of deciding when to push the button? Under what circumstances would that happen? Since these are supposed to be the last humans on Earth, why would you want to destroy any chance of repopulating the planet? (Unless this is actually a A Vault-Tec situation where the silos are just twisted experiments à la "Fallout".)

Meanwhile, in Silo 17, Steve Zahn's Solo (aka Jimmy, aka the best character on TV) suddenly remembers that his parents knew about the procedure involving the poison-filled hatch and explains the situation to Juliet. He also informs her that the people from Silo 17 who went outside did not die, at least not at first. In fact, his parents not only found a way to stop the poison vent and make the silo safe in the long run, but they even made it safe to go outside.

That's right. Outside. This is revolutionary. Does this mean that the outside world is not toxic? How would poison from inside a silo that is not technically used until a critical moment affect whether it is safe to get out? Unless there is some sort of technological aspect to the virus, ie. something that kills the person only after he gets out (or when the protective procedure is activated). That will have to remain a mystery for now. Until then, this new information complicates everything and puts the entire history of Silo 18 in a different context. It seems that the inhabitants of the silo are not survivors after all; they are actually prisoners or, if you will, ants on a farm sitting on a bomb one can detonate at will.

The other major story thread that is mostly resolved in the Season 2 finale concerns the traitor in the Mechanicus and the larger rebellion on Silo 18. It turns out that all the rebels knew that Martha (Harriet Walter) was snooping on Bernard (Tim Robbins) because she literally told them the first chance she got using the hand signals they use to communicate in Mechanical. (Of course, Bernard was arrogant enough to assume that the rebels would never figure out a way to communicate with each other non-verbally.)

With new reason to hope that Juliet might still be alive, the Mechanical prepares for war, finally making good on all their threats to blow up the engine. Other than that, it's really just a ruse to lure Bernard into sending all of the Judicial raiders down to the lowest levels while everyone in Mechanical storms up the stairs and reaches the top - then blow up the stairs. You read that right: a good portion of the stairs are now gone on the lower levels, trapping any attackers down there.

Now, this has huge repercussions for the future of the show. Such scales will take quite a long time to rebuild, so what exactly will happen to Mechanical and the engine itself? What about people caught in the middle levels who can't move up or down? Whatever happens next season, there will be a major shakedown in Silo 18. Of course, Sheriff Billings (Kinaza Uche) still has all of his deputies on his side so they can maintain some sort of order, but with such a large part of the population from Mechanically now trapped in the upper levels, they will have to deal with their own Snowpiercer-style situation in the silo there are too many people and not enough space.

It doesn't help that Bernard ups and quits his job the moment he learns about the security procedure, giving the keys to the vault and the title of head of IT to Robert Sims (Common). Naturally, however, Robert is once again prevented from finally getting what he wants. Instead, the moment he enters the vault with his family, Legacy's voice acknowledges him and sends him away, wanting only to speak with his wife Camille (Alexandria Reilly), who appears to be the new person in charge of things.

Just as the rebels are about to burst through the door and die on their way out, they spot Juliet returning from that fateful hill. She holds a sign on the outside camera saying it's not safe to go outside, and runs into Bernard on the way out and convinces him to stay and stop the Protective Procedure from being implemented.

Except it turns out that the entrance to the silo is also an incinerator, and we cut to black just as the room Juliette is in bursts into flames. Now, it's highly unlikely that Juliet is actually dead because she's wearing a firefighter's suit - and why would a show waste Rebecca Ferguson like that? The better question is what will happen when she reaches the people of Silo 18, because now that she's back, they'll have a lot of questions about how she survived without food or water in the wasteland. Will she tell them all about Silo 17, the legacy, the outside world and the poison? Presumably Bernard is dead and with him all knowledge of the Order and rules of the silo, so all bets are off as to what they can or should do - as long as they fix the poison vent first.

Then there's the epilogue, the most fascinating part of the episode. After Juliet's fiery end, we headed to Washington, D.C., in what looks like our present, minus the silos. It turns out that a dirty bomb was detonated in DC in the recent past and there is enough radioactivity that people now have to check before entering restaurants. We meet a politician and a reporter on a date (except, they don't call them dates in this timeline unless you're 95), and the season ends with the woman opening a present, a little something the politician bought at a store. on the way - the Pez dispenser we saw until the end of season one, a relic that lasts until Juliet's day.

Clearly we will see the origin of the silos, as it is unlikely that it is a random Pez, and even more unlikely that Pez will somehow be passed down from that woman to future generations until they enter the silo. No, that reporter is definitely among the citizens of Silo 18. The question is, how long until we get back to Juliet and the others?

The first two seasons of "Silo" are now streaming on Apple TV+.