A Decepticon gang has been uncovered in Canterlot City, only the Decepticons in this gang... are hideous. They are some of the most hideous Decepticons in history, and are now here on Earth, having escaped from the prison ship Alchemor.

And now that the gang is free, Sunset and her friends must round them all up and decide whether or not they should be sent back to jail... or allowed to roam free.