Captain Mainsail, a name that inspires awe in the hearts and minds of ponies, and strikes fear into the minds of their enemies. However, it wasn't always that way. Mainsail started his naval career as a deckhand aboard a civilian transport vessel, a nobody. However, when the vessel is tasked with ferrying a certain royal family across the Eternal Strait, a series of events unfold that changed his life forever, and made him into a legend.