A massive ocean trench has been discovered in the middle of dangerous waters, far from Equestria. It is now up to two ponies to find what's down at the bottom. Dark waters never bode well.

This story follows Ametrine Glow, a 28-year-old Earth Pony mare from a school known as Frostvale Academy, as well as her similarly aged friend Burning Bridges as they delve deep into the great unknown. From the journey there to the depths below, them and their crew never seem to be able to catch a break.

(Note: Set in an era where electricity and relatively modern technology is present.)