After years of trying everything under the sun, the Cutie Mark Crusaders finally earned their Cutie Marks and realized their destines.

But destiny is a funny thing, and the Crusaders are in for more than they bargained for.

A visit from Princess Celestia starts the Cutie Mark Crusaders and their new friends Diamond Tiara and Silver Spoon on a journey of discovery the likes of which Equestria has not seen in thousands of moons...

Just what is "Trinity Magic"?