This story is a sequel to LEGO Equestria Girls
In an alternate world where everything and everyone is made of Lego, a trio of banished sirens known as the Dazzlings discover the presence of Equestrian magic, and decide to use it to regain their lost power.
When a certain team of friends from Canterlot City find out about this, they call on Princess Twilight Sparkle of Equestria for help. Now, with the assistance of a reformed Sunset Shimmer, Twilight and her Lego friends will once again journey across various regions as they attempt to save the Lego World from falling under the spell of the sirens.