This is a Clarke and Lexa (Clexa) fan fiction which is from the series ' The 100' which is based on the novel of the same name written by Kass Morgan. What if Clarke Griffin and Lexa kom Trikru had the opportunity to travel back in time all the way to the beginning of the story of The 100? Lightning Only Strikes Once will follow our heroes as Clarke wakes up in her cell on the Ark, and Lexa in her bedroom in Polis.