While visiting Hawkesbury, England, eleven-year-old Holly Shepard, her younger brother, Ben, and new friend Everett, travel to a parallel universe where she learns that the adventures she has always dreamed of can be messy and dangerous.
A year after their first visit to a parallel universe, Holly and Ben Shepard and friend Everett return to find that much is changed, and the fate of Anglielle is at stake unless Holly can master Water Elemental magic in time to save the Adepts.