Lord Prism, leader of the Dreadcolts, a murderous band of warriors, has been captured by Princess Celestia. His memory has been erased, in the hopes that he might become a good member of society if he learns about the meaning of Friendship. And Princess Celestia can think of no one more qualified to handle the task than her most loyal student, Twilight Sparkle.

Twilight however is not very happy about this assignment.

Will Prism see the error of his ways, or will he slip back into old habits?