Scorpan returns to Equestria to help the Princesses and their subjects recover from Tirek's rampage. However, he also tries to help Discord get back in the good graces of those he betrayed by siding with Tirek.
After the events of "The Cutie Remark," Starlight Glimmer develops a new respect for Twilight when she discovers that they both have something in common: that they once had sanctuaries that were both destroyed.
Following the Changeling Invasion of Canterlot, Twilight's friends, Princess Celestia and Shining Armor lament over how they failed to protect Canterlot from the Changelings as well for their behavior towards Twilight at the Wedding Rehearsal.
After Princess Cadence and Shining Armor's love spell defeated Queen Chrysalis and her Changeling army. The spell also caused a rip in space and time that opened a portal to the Lion King world.