Ms. Cheerilee was stressed to a point that she decided to send her class to an industrial laboratory to allow the scientist explain how ponies and other species regenerate damaged materials. The field trip is cut short when a class 4 outbreak is called on the lowest level of the lab. The foals are locked in the lower levels of the lab and must find a way out, before whatever it is, gets them.

Canceled due to ran out of interesting options that I could put into the story.