Sparky brings Spike to the Crystal Brighthouse.

I've done a number of G5 meets G4 in the future-type sagas before, and this is one that I haven't touched on in a good while: Spike's return. To recap, Spike arrives in Equestria after so many years to track down Sparky, whose egg he noticed was missing years ago. He wants to bring the hatchling home, where he belongs, but Sparky's adoptive father, Hitch, is opposed, causing turmoil between him and the old dragon. After meeting Spike in town during one stormy day, Sparky brings him to the crystal brighthouse to meet his dad and the others, but as they enter, Spike gets a feeling he hadn't felt in a long time: A place where friendship is overflowing, and it all reminds him of a particular special place he shared with his friends.

Though, in the end, he shrugs it off, wanting to stay focused on his quest.

That's about it. Really wanted to do another Spike/Sparky scenario, and I have more ideas, but for now this is one.