Sunny and Hitch learn that a dragon named Spike was responsible for sending Sparky's egg to Maretime Bay. They and their friends then seek out Spike to try to get some answers about what happened to Equestria and Princess Twilight.
Starlight had done it: She successfully prevented the rainboom and destroyed the time spell. Now, there's only one way Twilight and Spike can save the future: Help their friends earn their cutie marks.