Complex sentence: During the movie, Joker's deepest ambition is revealed: to make Batman laugh as a sign of the respect he hungers for, but Terry McGinnis, the new Batman, freed Tim by destroying the microchip that the Joker implanted in Tim's mind.
Split into simpler sentences: During the movie, Joker's deepest ambition is revealed: to make Batman laugh as a sign of the respect he hungers for. But Terry McGinnis, the new Batman, freed Tim by destroying the microchip that the Joker implanted in Tim's mind.