What if Clarke had made it in time? What if she set the tranciever and she made it back to Becca's lab in time before the death wave hit? What if she was able to go into space with Bellamy, Raven and the others?
Sky wanted to help protect the world from A.L.I.E. but when she arrived at Becca's lab, her injuries forced her into a coma. No one could wake her up, and she wouldn't survive the trip to space to escape Praimfaya.
But now, six and a half years later, she has woken up to face another threat, one from above, that could destroy the world forever.