The centuries-spanning sequel concludes! In 2008, an unexpected villain is reborn ? but can even Green Lantern, Knightwing, Cyborg, and a new Flash stop him without help from either of the World's Finest Heroes? Then, a leap to 2019 includes a look back at the year 1920, as Jonathan Kent and the young Superboy irrevocably change the destiny of the Wayne family, sowing the seeds for a truly timeless friendship.