Deep out in space, there was a mysterious robot heading for Equestria contining a strange black creature known as a Devil Chaos Chao.
"...I hope I'm not too late..." The Chao said.
Meanwhile, in a dark ally post the party Pinkie Pie threw was Cole, looking over a glowing blue crystal he found in the ally.
"All beings see darkness as being full with nothing but evil and hatred. But take a closer look, and you'll find light in some dark beings." Cole said.
Story Ark 2: Turnabout Darkness