Summer has arrived in Ponyville, and all of the colts and fillies are ecstatic about the long break from school. The Cutie Mark Crusaders are among those excited about the summer and they end up going on an adventure for the ages. There's only one problem. Diamond Tiara and Silver Spoon are tagging along with them. However, what none of them realize is that many undiscovered secrets of Equestria are waiting for them. What are these secrets? Why are Diamond Tiara and Silver Spoon traveling with the Cutie Mark Crusaders? What challenges will these fillies face?
Thanks to Frostfur and Howling Wolves for proofreading this story.