This is Saint Snortle, the space dragon that rules Kepler-22b
Saint Snortle's father ruled Kepler-22b, just like his father before him. Snortle's family is in charge of keeping this planet safe. He knows no matter what, he needs to keep this planet and everyone on it safe.
I was just trying to protect them, but I now know that i was just hurting them. I am forever sorry.
Saint Snortle knows that the neighboring planet, Kelper-452b, is planning an attack on Kelper22b. Snortle decides to put a force field around the planet, in order to keep the inhabitants safe. The force field, however, entrapped the inhabitants within the planet's atmosphere; they were no longer free.
The Kelpler-22b inhabitants didn't like their freedom being ripped from them, so they teamedup and decided to over throw Saint Snortle -- he was banished from the planet he was sworn to protect.
Saint Snortle realizes what he has done wrong. He just wanted to protect them, but hurt them instead. He tries to apologize, but the inhabitants wont let him back in, for they don't want it to happen again. He must move on from the planet he was sworn to protect.
Grace feels bad for Saint Snortle. She knows that this could happen to her or anyone. Grace is sad that Saint Snortle is not let back into Kepler-22b.