When a teenage priestess, living 5,000 years ago in Ancient Egypt, connects with Rhory, an English schoolboy visiting the British Museum, she puts herself and him in grave danger. The link they forge through the pathways of time is noticed. She must escape the murderous followers of the God Set, and Rhory is hunted by their modern counterparts, the nefarious Society of Secrets.

When Rhory is shot at in Surrey, and nearly kidnapped in Alexandria, he knows it's Game On. Pursued across time, over snow and ice in war-torn medieval Sweden, sought in a slave market in Ancient Alexandria, he and his young teenage companions have a to save priceless wisdom from the Library of Alexandria. Three modern witches are determined to stop them.