Transformers Prime: Return of the Sirens is a new movie.


Three male Sirens, Half Note, Allegro Amaze and Nightfall Dawn, who have been banished from Cybertron, discover that energy from their homeworld has been brought to Equestria and plot to use it to make everyone adore them. To do this, they turn what should be a musical showcase into an all-out battle of the bands. Now it's up to the Autobots and ponies to stop them before it is too late.




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