Spurred on by another mysterious rhyme from Morgan le Fay, the magical librarian of Camelot, siblings Jack and Annie climb into their magic traveling tree house once again, this time on a journey to Merry Olde England--and Shakespeare's theater. Their quest? To find "a special magic" that will, "without wand, spell, or charm / turn daytime into night." Armed only with their backpacks and a book about 16th-century England, Jack and Annie manage to solve the riddle, save a bear from a cruel fate, and make their stage debut in "A Midsummer Night's Dream."