Sometime after the incident with Sludge happens, Spike's been more and more conflicted on where he really came from, he never properly got the answer as to where he came from, and this incident only made him question it more. But one day, he wakes up to receive a strange letter that's in his room. And upon reading it, the letter surprises him greatly when it says that it's from someone who claims to be his mom, and that she is in a world of Dragons, the Dragon Realm, and for them to finally meet and for Spike to understand where he came from, he needs to go there in order to find her.
The letter had a potion that looked to be able to teleport Spike to this world, and after heavy thinking, Spike decides to go on his own to find out what really happened to him by himself, he leaves a letter for Twilight and the others to let them know he's going out on his own to find his own calling. When he arrives in this world, he meets a purple dragon by the name of Spyro, and after learning about eachother's problems, Spike and Spyro team up in order to stop the threats that come in their way, while also trying to find Spike's mother..