The first (and second) seasons of this show are pretty good. The characters are interesting, tension feels impactful, and the intrigue is engaging. Fun time travel elements, unique concept, and a serious threat makes for a pretty solid show!

Unfortunately, especially in the third season, the writing goes downhill a lot. Many of the characters become so annoying that you can't care about them anymore. The concept is kinda meh. When the end of the world happens every season, it doesn't feel impactful any more.

But the character development is definitely the worst part. The infighting becomes so embittered and *stupid* that you don't appreciate it any more. As a result, moments that should be big and meaningful also feel petty - because everything about the characters is petty. This makes the show pretty hard to watch in the 3rd season.

And even when the petty behavior is based on traumatic events, it becomes so unempathetic and meaningless that you question why you're watching it.

I would not recommend starting this show now.