Do you ever have it that a series catches you so fast, you just wait to rush home to continue watching it because you want to see where it leads? To me 'Silo' is one of these kinds of series. With 2 seasons binged in less than two weeks, the immediate action to do after finishing so, was checking is there was already a season 3 in the making.
The good news is, there is more to come!
Spoiler Alert: Think about if you want to continue reading as there might be some massive spoilers here waiting for you. I found there were a lot of plot twists especially in season 1, so better stop here and just watch the series if you are really interested

So what it is about
So the story is about a community who all live underground in a massive silo because for some reason it is too dangerous to go outside. Everyone who lives here has lived in the silo for their entire life and there there is this whole mini society gone on.
This whole series is based on the Silo books written by Graham Yost and are called 'Wool' 'Shift' and 'Dust'. If I understand the interwebz correctly, the first two seasons were kind of based on the books, and season 3 takes a bit of a side turn of the story.
The storyline starts following the life of sherrif Holston from where immediately flash backs start to when his wife commited suicide by going outside to 'clean'. They call it cleaning because there is a camera pointed on the outside which every now and then requires a cleaning, but this also means that you will be exposed to the outside air which is no bueno.
A rule in the silo is once you decide to go outside and say that out loud, there is no turning back anymore. Flashback to sherrif Holton again, he also decides to go outside. In his will he leaves that he appoints a new sherrif called Juliette Nichols.
The storyline is about what she all goes through in the silo and why she gets deeper and deeper wrapped in the mystery also in the end making her go outside.
Screenrant
I though after season 1 that potentially season 2 would be a deception because the storyline of the first season was so damn strong. With adding more new factors in, and also new headline players in with Juliette...this is really a pull in factors because you want to know what happens.

And now we are stuck in the waiting game
A lot of people compare this series to the series 'Fallout' and I can understand where they come from. Life after a gigantic disaster, always a good topic right? But if you ask me, 'Silo' is a way more capturing story, because it is a less absurd kind of situation.
And with the cliffhanger from season 2 at the end...well yeah...that is really a scream for MOREEE
(I check to see if there were some trailers, but nothing official is out...only summaries which suck...Boooh!)