Taiwan's prosecutors have dropped a copyright case against the Kuomintang, a win for the party and a loss for the production company behind the TV drama "Zero Day Attack."

• Zero Day Culture accused the KMT of ripping off its drama trailer for a political video posted during last year's recall campaign.
• Taipei prosecutors found the KMT shot, edited, and voiced its own footage, with no direct copying.
• The two videos differ in plot, message, setting, and characters — one promotes a drama, the other warns against fake news.
• Two former KMT staffers named in the complaint, Wei Chun-yu and Yang Chih-yu, were cleared as well.

Outlook: The complaint is closed unless the production company pushes for a review of the decision.