A crossover with Doctor Who! For some unknown reason, everypony is doing strange things that they normally wouldn't be doing. Twilight starts building a rocket, Rarity starts making armor, and Pinkie Pie becomes a weapons manufacturer. Nopony can account for their actions, and they all want to stop. Yet, there is some strange force... a voice... a suggestion... that is creeping into their minds, telling them to keep working. If only they could remember who told them that...