After Diamond Tiara's birthday party goes horribly wrong, Apple Bloom makes a wish with unintended consequences. Now finding herself the future, she must learn to adapt to her new life as a fully-grown mare.

But she soon learns that somewhere in the past, the Cutie Mark Crusaders split up! Determined to set things right, Apple Bloom sets out to find her friends and mend the mistakes made in the past...while trying to find a way back to the present!

(Cover art not mine...link is here!)