A little changeling drone couldn't make it for the big invasion. With the help of other desperate changelings, he avoided pony retribution as long as he could, but in the end, ponies found him. Now alone, he's just trying to survive.
One little drone creatively survived the invasion of Canterlot by not being there. He gathered friends, and managed to save the world without anyone knowing. Now, he's the king of a new hive, and it's time for him and his family to walk in the light.
A simple drone "accidentally" failed to leave the Badlands hive for the invasion to Canterlot. He was only two weeks old, one of the clutch specifically created to break through the protective shield. Now starving, he's just trying to survive.