Setting: The subterranean town of Fraggle Rock, on the outskirts of Equestria. Home to ponies of all kinds, and a newly discovered race of ponies called Doozers, a subset of Breezies with no wings and tough, stocky builds. Near the exit of Fraggle rock lies the Gorg castle, home to a race of enormous, mountain-like horses called Gorgs.

The caves and tunnels beneath Fraggle Rock twist and turn deep underground, and are filled with mysterious magic.

Characters:

Compass Rose, the leader of his little herd. He's an explorer, delving into the caves below the Rock to map them out and discover their magic. Compass is a very gifted unicorn, even though he rarely studies spells. His magic comes from experience, copying the natural magic he stumbles across while exploring.

Silver Scale, Compass's adoptive brother. This earth pony has a very special gift, the power to see and understand all sides of an argument. This lets him make big, important decisions with confidence, but leaves him practically unable to make small, inconsequential choices.

High Dive, the athlete. She's hyper-competitive and constantly moving. Though her confidence can get her in trouble sometimes, it can be essential in protecting her friends. Her talent is swimming, and she truly is one of the best at it. She has a friendly rivalry with Compass Rose.

Wet Blanket, the pessimist. He's just here to make sure the others don't get themselves killed while adventuring. He'd much rather be practicing his talent, laundry. He's repressed his fun side so hard that it's practically a different pony! (It literally becomes a different pony later in the series, when an ancient collection of chaos magic is accidentally sealed inside Wet Blanket. It fuses with his fun side to become Firework, Blanket's new headmate.)