A girl and her two brothers are transported back to the time of King
Arthur, where they must return three magic talismans to their rightful
owners or remain trapped forever in the distant past.
The adventure begins when Sara Lowry wins a picnic basket at the
Firemen's Strawberry Festival. She and her brothers, Greg and Eric, are
staying with their uncle at his Hudson Valley estate while their parents
are in Japan. Fascinated by the haunting history of the old manor, they
pack a picnic lunch and begin their search for the legendary lost lake.
They discover a medieval castle - and suddenly they're enveloped by a
gray mist that transports them back to the time of King Arthur!
There, they are given an urgent mission to recover three lost talismans:
Arthur's sword, Excalibur; Merlin's ring; and the horn of Huon, Warden
of the West. Can Sara, Greg, and Eric fulfill their quest and save
Avalon - the only place that stands between the Powers of Darkness and
the mortal realm - and return to their own time?