A dark night, a sinister cult, an interrupted ritual. And Trixie Lulamoon finds herself being drawn into a strange series of events beyond her wildest imaginings.

Two ponies, with one problem, and all they need to do is get to Canterlot to solve it. Should be simple enough, right? Of course not!

Madness, chaos and math strike Ponyville when two well-meaning ponies mix science and... more science in an attempt to make a new type of cider. And one of those ponies is Pinkie Pie.

A new pony arrives in town, and all she wants to do is leave. But why? And what's her connection to Twilight Sparkle?