Complex sentence: On Mustafar, Vader meets Padmé as she pleads with him to flee Palpatine's grasp but he refuses, saying that the two of them can overthrow Palpatine and rule the galaxy.
Split into simpler sentences: On Mustafar, Vader meets with Padmé, who pleads with him to flee Palpatine's grasp. He refuses, saying that the two of them can overthrow Palpatine and rule the galaxy.