Complex sentence: The kingdom of, where various characters from fairy tales reside, is attacked by the evil Emperor Nogo, who intends to direct its world to have its unhappy ending, but is stopped when Queen Euphoria uses the last of her energy to seal him away.
Split into simpler sentences: The kingdom of, where various characters from fairy tales reside, is attacked by an evil emperor, who intends to direct its world to have its unhappy ending. The queen uses the last of her energy to seal him away.