When Conductor and Assistant are out looking for a crystal for one of Conductor's latest inventions, things are normal enough till they begin to slowly spiral out of control. It seems Conductor has gone mad, having created a metal army of ponies to attack and take out his closes friend with the Princess of Friendship. Looking for a solution things continue to go from bad to worse. The three Princesses work to beat Conductor but after the plan backfires the one behind the madness makes his appearance from the shadows under the Frozen North. Twilight using her magic to protect her and Assistant passes out, both being helped by The Doctor and Derpy. Can The Doctor, Twilight, and Assistant help save Conductor from Sombra? Or will Sombra be the winner and leave 3 of the 4 Princesses frozen in time?