Called “Anaconda,” the bulk of the episode was set on Earth, shortly before and then a few years after A.L.I.E. 1.0’s nuclear apocalypse, and the end suggested that the prequel spinoff would follow Callie Cadogan and her friends rebuilding society on Earth.
That said, The 100 showrunner Jason Rothenberg has already revealed plans to take the spinoff back to space.
Spoilers ahead for the backdoor pilot to The 100’s prequel spinoff, called “Anaconda.”
The 100 took a break from the struggles at Sanctum and Clarke searching for answers to send viewers on a blast to the past to what could be the show’s spinoff.