The Last of Us ending explained: Your biggest questions from the season 1 finale answered

gamesradar.com:

The Last of Us season 1 has concluded – and it has well and truly put an end to the theory that video games just don't translate all that well in different mediums. Over the last two months, the HBO adaptation has steadily built its audience and earned an impressive 96% on Rotten Tomatoes. Its emotional, action-packed finale assuredly sticks the landing, but with a lot of gameplay ground to cover in just 44 minutes, we'd understand if you missed something. (Besides, we know how hard it is to soak up every detail when you're watching through tears).

With that, we've pored over episode 9, titled  'Look for the Light', and answered your biggest questions below – so if you want to know how Ellie was immune, what the Fireflies' actual plan was, and more, keep scrolling. With a follow-up game to turn into more episodes at the ready, the HBO show is far from finished too, so if you're keen to learn more about what's in store for the future of The Last of Us, we've got you covered there as well. 

Before we dive in, it goes without saying that this article contains spoilers for The Last of Us season 1 ending, so if you've yet to watch The Last of Us finale, we suggest you turn back now. Unless you don't mind ruining it for yourself ahead of time, anyway...

Attention: This section contains mentions of suicide, which some readers may find distressing. 

Following a flashback sequence that sees Ellie's mother Anna (Ashley Johnson) fight off a runner while giving birth and later, Marlene take newborn Ellie before executing the infected Anna, The Last of Us episode 9 catches up to Joel (Pedro Pascal) and Ellie (Bella Ramsey) in the present day. A few days have passed since their run-in with cannibal cult leader David and Ellie is still