1000 years in a flooded world had greatly effected Ponykind. Though surviving from the flood, ponies had learned to adapt and survive in underwater cities. In the town of Sperohoof resided a young and intelligent colt named Swift Currents. When Swift is washed away by the waters after an attack on his hometown he must turn to the life of chivalry and become an Aqua Knight to take revenge on the invaders who destroyed his home. However after meeting an unexpected friend he learns about a greater evil. The evil that had caused the tides to rise 1000 years ago. Faced with this new challenge he must make the decision to either pursue his original intentions or to take on a fate that would decide the world's end.