Complex sentence: Oliver saves her from Cheetah with some help from Steve Trevor of A.R.G.U.S. Ultimately, Oliver saves Mia from the man pursuing her, her father John King, and exposes him as a murderer who used bribery and corruption to control Seattle.
Split into simpler sentences: Oliver saves her from Cheetah with some help from Steve Trevor of A.R.G.U.S. Ultimately, Oliver saves Mia from the man pursuing her and her father John King. Oliver also exposes him as a murderer who used bribery and corruption to control Seattle.