Twilight Sparkle has hit a wall in her studies. So when she is tasked by Princess Celestia with joining an expedition on a faraway island, she can't help but see it as a form of punishment. Nevertheless, she packs her bags and heads to Baltimare, one of Equestria's many port cities. It should have been simple: find a ship offering passage and pay them to take her to Haven. She soon learns, though, that ponies are afraid of the unknown waters past Eternity's Crossing. Despite her best efforts, she is unable to find a ship willing to take her there. That is, until she meets Captain Rainbow Dash.

Brash and enigmatic, Rainbow Dash, along with her crew, are the only ones willing to ferry Twilight on the waters of the Forgotten Sea. She expects six months of quiet travel that will allow her to continue her studies. What she gets is an adventure which makes her realize that, when sailing the high seas, the line between right and wrong is never as clear as it seems.

(Featured on EQD as of 4/28/13
A huge thanks to Breath of Plagues and Amacita, who are amazing editors.
Credit is also due to psychicscubadiver and Zeta040 for pre-reading.)