Princess Luna assembles a team of Equestria's most undesirable inhabitants in order to deal with the problems too dangerous to risk the lives of the Elements of Harmony.
The Doctor and his friends arrive by accident at the edge of the Crystal Empire while it's under the tyrannical rule of King Sombra. Naturally they get captured and must now somehow escape.
Time Turner is in love but is hesitant to really act on it. Other things in his life also distract him like the clock tower and a new employee at his shop.
Derpy's life takes a whole new direction when she is given a once-in-a-lifetime opportunity. But where will this new journey take her, and who will she be at the end?