Transformers: Generation 1

S03:E10 - Thief in the Night

In his attempt to take over Galvatron's leadership of the Decepticons, Octane secretly hatches a fiendish plot to destroy the Autobots. Octane's plan threatens to destroy both humans and Autobots alike. To make matters worse, monuments from around the world are stolen and the Autobots must find them and return them to their rightful places.