A sweet moment happens with Pinkie Pie when Oak The Shadow Dragon shows her a new spell Twilight taught him, and she teaches him the true meaning of laughter. There's more to Pinkie than most ponies know, but he understands her.
With the threat of the other Shadow Dragons approaching Equestria growing closer by the day, Princess Celestia decides Oak's training regimen is not enough. She has found a new champion to train their ace in the hole. And his name is... JOHN CENA!