Talk:Just for Sidekicks/@comment-835637-20130105001147/@comment-5002336-20130105102126

I actually speculated about this episode a bit further down:

Spike tells Twilight and her friends that he can take care of their pets while they head to the Crystal Empire to visit Cadence and Shining Armor. Spike soon realizes that the pets are too much for him to handle so he asks the CMC for help. The pets start to head after Twilight and her friends, and that´s how Spike and the CMC end up in the Crystal Empire with the pets.