When Sunset steals alien Princess Twilight's new nanotechnology invention, some of the consequences surprise everyone.
A lonely girl might even find true love.
(Also, we learn why Twilight Sparkle was so terrified of having to go back to Magic Kindergarten.)
Mood: science fiction AU with comedy and shipping elements.
Prereaders: LysanderasD, Logarithmicon, Carlos S., Shirlendra. (The prereaders are not responsible for my own mistakes and shortcomings, though.)
This story might or might not be an entry in Science Fiction Contest II (link), at least under the current rules that accept a wide range of AUs with science fictiony stuff.