Hollow was 11 years old when pirates struck Equestria. Following his grandpa, he sets out on a journey to the Arcane Islands, where he is driven to release the princesses and the elements of harmony in order to fight and defeat the pony behind the scenes.

Cover art/drawing was made by the person I linked. I Photo Shopped the effects and font.

(The drawing is really good so props to the guy/girl/other unspecified gender: k04sk)