The School of Friendship is about to receive a guest like no other. The unknown brother of Princess Celestia and Luna, Prince Thornhill. After being gone for more than a thousand years, Prince Thornhill has returned and will be staying at Twilight's Castle in Ponyville. But when the prince arrives, the mane six and student six come to find out that Prince Thornhill is far from what they expected.

It's 'Hearts and Hooves Day' at Twilight's School of Friendship and the rest of Ponyville. The Young Student Six decide to try and celebrate this pony holiday with each others. This leads the young six (Silverstream,Yona, Sandbar, Gallus, Ocellus, and Smolder) to different adventures and high-jinxs together. Yona and Sandbar's family meet each other at the bowling alley where things get out of control. Silverstream recruits Gallus to help her solve a mystery. Ocellus and Smolder try their hand at causing some mischief. While Apple Jack and Rainbow Dash are back to challenging each other. Hoping that they can all make it through the day.