In her youth, Twilight Sparkle discovered a way to infuse technology and magic. 20 years after her breakthrough, she is now the CEO and founder of Sparkle Industries, and one of the wealthiest ponies in Equestria. Her relatively perfect life goes sour, however, when she is captured by a group of griffons who want to steal her technology.

Twilight Sparkle wakes up one morning to a harsh dose of unreality. She is stranded, without her friends, on an island which matches no known locale on Equestria. Surrounded and harried on all sides by the alien and the dangerous, she will find her mettle sorely tested, and find perhaps that the best friends you will ever have in your life are the ones you make when your back is to the wall...

Thanks to CedricBale and noobie56xx for tracking down the name of the artist so I could give them credit.