Happily Ever After
After Applejack and Rainbow escaped the clutches of Blueblood, they sailed away, their love continuing to grow. They married each other, just like Applejack always wanted to, for love. Rainbow Dash had find her true love, and didn't dare let it go. Their love became a treasure whose worth was measureless.
Rarity and Fluttershy joined Applejack and Rainbow some weeks after. After Fluttershy saw Mac for what he truly was, she lost her love for him. Twilight and Pinkie were still part of the crew. They all lived happily ever after...
But...
Back in Baltimare, Prince Blueblood was executed by the citizens of his kingdom. After they found out the truth, they stormed his castle. Many good ponies died in the assault, but their freedom was well worth it.
The Apples returned to their home. Mac and Granny were stripped of their titles once everypony learned about what they wished to do to Applejack. Apple Bloom grew to become a good ruler like her sister. She ruled the kingdom upon the values of peace and harmony.
Like the legend says, true love is the treasure that is not taken, but earned. The power of true love can never be overpowered. The legend of true power, that never should fall in the wrong hooves... will never happen. The treasure was, still is, and always will be... True love.