Contains spoilers from Season 9 Episode 21!

After years and years of being archenemies with little interest in reconciliation, all it took was one little adventure for Daring Do and Dr. Caballeron to bury the hatchet and become friends, resulting in them writing a collaboration novel under their aliases. But after a few months of traveling around Equestria to promote the book together, something happens when the pair are in Fillydelphia during a Daring Do convention.