Sinister plots, schemes within schemes, magical upheavals and a world to save from war. Aubrey goes looking for trouble - and finds it, as always. Magical genius Aubrey Fitzwilliam, along with his loyal friend George, is trying to immerse himself in his new life at university. But for Aubrey life is never straightforward. When Aubrey's father, the Prime Minister, invites him and George to take a ride on a top-secret submersible, Aubrey can't resist. The magical attack that threatens to send them to the bottom of the ocean begins a whirlwind series of events - a plot to rob Albion's largest bank, strange underground disturbances and an opera singer who bears an uncanny resemblance to Aubrey's nemesis, Dr Tremaine . . . How can Aubrey concentrate on his studies when there are mysteries to unravel?