When Penny solves the riddle of an unbreakable knot in time, she unwittingly releases two time-travelers from the distant past into Piper Falls.
The town is plagued by a series of baffling events related to the appearance of a strange elf-like creature.
Penny's science teacher and mentor, Mr.
Myrdin, recognizes him as the Coch Coblyn.
An evil spirit from Celtic myth with a penchant for igniting city destroying fires.
Compounding the mystery is the discovery of a prehistoric scepter, mad.