Complex sentence: However despite having the deal, it is ultimately voided when Antwon's rival, Captain Rawling, sacrifices her job to cancel the deal out, making sure that Mitchell gets his chance to rot away in a prison cell.
Split into simpler sentences: However despite having the deal, it is ultimately voided when Antwon's rival, Captain Rawling, sacrifices her job to cancel the deal out. Making sure that Mitchell gets his chance to rot away in a prison cell.