Transformers Prime: Powerful Alliances Part 1

A powerful threat awakens after the death of the last prime and the Matrix of Leadership. Meanwhile, a Decepticon warrior known as Bludgeon, decides to bring the Decepticons back, and has plans to conquer the Universe. The Autobots end up discovering that an ancient artifact called the Cube of Cybertron, is kept on earth, guarded by Human government officials known as Sector 7...