Celestia has ruled the continent of North Equestria with wisdom, compassion, and infinite patience. Showing great care and love for all her subjects, both pony and human. Though the world is at peace, it's an uneasy peace with the Princess surrounded by enemies on all sides.

Everything she knows is about to be thrown into question however, when a retaliatory attack brings a young filly to her attention that might spell the end of everything she knows and loves.

(A Marvel/MLP crossover)