"Twelve-year-old Sophie Sawyer's first assignment as a Companion is to help Nimue, a young druid, and Emrys the Excellent, Merlin's thirteen-year-old apprentice, protect the Holy Grail from the evil sorceress, Morgana"--Provided by publisher.
"When thirteen-year-old Arthur of Gal, the future King Arthur, accidentally time-travels to the twenty-first century, Sophie Sawyer, twelve, must convince him to return and correct the time line"--OCLC.
