On a group trip to Rome, musician Clementina is whirled back in time to 17th century Italy.
Amidst court intrigue and creaking carriages, Italy becomes a chiaroscuro backdrop to her growing feelings for young violin-maker Antonio Stradivari. They kiss under an orange tree, and she persuades him to help a poor young boy from the nearby orphanage.
But people begin to notice just how ‘strange’ the young woman at the artist’s side is. She must be a witch!
Meanwhile, in present-day Scotland, her brother suffers a life-threatening accident, and in an icy corner of the Arctic, a professor frets about global warming.
Can Clementina find a way to return to the 21st century?