*Pausing from their honeymoon island getaway, Penny and Ace take a jaunt to Italy, but find Dark Bird and her country's Air Force now control the airport - and several others. Their secret is a new fleet of "terror-proof" aircraft, impossible to threaten in the air. Penny's local research project may reveal the key to these miracle jets - but not if Dark Bird shoots them down first! Part one of three of the final showdown between Ace and Dark Bird!