It has been a year since Trixie accidentally teleported herself to Tartarus and now it is time for her to return to the City of Cages. It has also been a year since both Sombra and Trixie met and now it is time for them to reunite.
After discovering King Sombra preparing for his latest attack in their clubhouse, the Cutie Mark Crusaders soon learn they have a lot more in common with the tyrannical King than they might've thought.