One of the SecurU sack's most ingenious features is its ability to convert sunlight into nutrients that are magically absorbed by the wearer's body, thus eliminating the need for solid food and water. Coupled with the sack's ability to convert all waste into oxygen, this means the wearer of a SecurU sack can remain in it indefinitely, perhaps even permanently. To date, though, this has never been tested.

Recently, Lighting Dust got into legal trouble; her continued brazenness and disregard for safety in the Washouts eventually caught up with her, and a particularly reckless and dangerous stunt resulted in disaster that cost numerous ponies their lives. As a result, Lightning Dust was arrested, tried, and found guilty of over a hundred counts of criminally negligent ponyslaughter, which earned her a life sentence without the possibility of parole (the latter due to her defiant, unrepentant attitude).

Princess Twilight, however, saw an opportunity for good to come out of the debacle; she offered Lightning the chance to participate in an experiment to see if someone could stay inside a SecurU sack for decades, if not the rest of their lives. If she agreed to participate, Twilight would alter the sentence so that parole would one day be possible. Wanting the possibility of being released one day over knowing that she never would, Lightning Dust reluctantly agreed.

Stripped of her clothing, Lightning was put into a SecurU sack, which was then sealed shut, gripping her like a glove. And to further test the sack's efficiency, Twilight shot Lightning Dust into space, where she was placed inside a specially constructed pod. This, she told Lightning, was to test the idea of putting the most dangerous criminals in a place where they could not possibly harm anyone else; what better location than the void of space? The oxygen put off by the suit would allow her to breathe, and the captured sunlight would supply Lightning with all the nutrients she needed. Audio equipment would allow her to talk to those on the ground hundreds of miles below and listen to music (when allowed), and the pod was magically secured to ensure she wouldn't go flying off into the void or plunge back to earth and burn up. And best of all, she has a breathtaking view to keep her occupied.

With Lightning secured, Twilight returned to earth, leaving Lightning Dust to begin her life sentence. With her body converting nutrients at perfect levels, it's conceivable that her lifespan could double, which meant her chance at parole might not come for at least a hundred years, but she'll have plenty of time to learn the virtue of patience.

Meanwhile, down on the planet's surface, Rainbow Dash has the biggest smirk imaginable.