Pyrefly is a hard-headed, fiery young pegasus with a penchant for racing and partying with his friends. His sister, Ice Dancer, is a quiet, intelligent young unicorn always in her brother's shadow. After a long and troubled life as the son and daughter of two great, influential, and sadly deceased pony artists, Pyro Technic and Snow Shimmer, the two siblings settle down in Ponyville. Once they're settled in, strange things begin to happen in Ponyville around them, and these two otherwise unremarkable young ponies are in for a wild ride as they're sucked into a terrifying fight for their lives and their sanity against the madness that consumed their home and their parents five years earlier.