Upon his arrival back home, the Doctor finds a light on his equipment blinking. This light is new to him. He didn't build it. He doesn't know what it does. So what does one do when they're presented with such a tantalizing curiosity? They figure it out, of course!

Join the Doctor and an assortment of companions as they travel Equestria, Time, Space, and Parts Unknown looking for answers to questions nobody asked, riddles with no answers, functions with no machines, machines with no function, and wibblies without wobblies!