A changeling infiltrator is deployed to a fortified Equestrian position and after weeks of waiting for the promised day, he watches the horizon waiting eagerly for the arrival of his comrades. And he waits. And waits... Well, at least he has company.
After Queen Chrysalis learns of a faraway island nation inhabited by harmonious changelings, she sends a diplomat to learn more about them, and to make them an offer.
When the nefarious Dr. Caballeron steals a artifact from right under Daring's nose, it's up to her to get it back before it ends up in the wrong hooves and changes the fate of Equestria forever.