As revs up for the seventh and final season, The CW's post-apocalyptic, dystopian drama has gone through quite an evolution over the past six years.When it first debuted in 2014, the series centered on a group of teenagers as they became the first people from a space habitat to return to Earth after a disastrous nuclear apocalypse.
When the final 16 episodes kick off Wednesday, Clarke () and Co. attempt to rebuild Sanctum, the community they just destroyed, while combating a new enigmatic, but dangerous, threat, Anomaly.
A far cry from the simpler days of learning to survive. (Watch ET's exclusive sneak peek from the premiere above.)While outgoing shows like and were forced to pivot their original series finale plans due to the
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