These stories continue the adventures of Feather Wind, Stern Wing, and Vision's journey with eccentric Time Lord the Doctor and his adorable assistant, Derpy Hooves. This is the sort of sequel to "Sky Dancer, the First Flying Unicorn". More specifically, it is an extension of chapter 17, "Adventures in the TARDIS". While reading Sky Dancer is not required, these stories will most definitely have spoilers for everything before chapter 17 but not after that chapter because those chapters haven't happened yet in this timeline. This is a closer look at the years Feather recapped past for his daughter. However, these new stories won't be flashbacks anymore. Rather it will be told as if these events are occurring in the present tense.
Each of these stories will be told in its own arc which follows the formula of the classic Doctor Who series. When an individual adventure is complete, the next story will be told in its own arc. Some threads of these stories might have an over-arcing story, but otherwise, they'll have an episodic formula. Great effort is made to make this series feel like an authentic Doctor Who episodes insofar as characters, setting, events, and plot are concerned but they'll have an MLP twist.