Applejack and Rainbow Dash are both known for being competitive. Thus, when an opportunity for a dare arises, it is no surprise that the two take on the challenge – cave exploration. Unexpectedly, Spike manages to tag along for the ride. Spelunking is a foreign concept for the trio, yet they're willing to take a risk. But if danger is inevitable, ... how far is too far?

Takes place a few months after Season 9.