When James Walker first arrives at Tudor College, Cambridge, he is anxious to find his place among new friends. By accident, he encounters one of the members of a club calling itself the Tudor Night Climbers, a tightly knit, wealthy, secretive and tantalizingly eccentric circle of undergraduates who at night scale the college towers and gargoyles in pursuit of ever greater sensations.
Seduced by their talent for decadence and high living, James falls for the reckless charisma of both Francis, the group's ringleader and Jessica, his beautiful best friend. Jessica becomes his obsession, and also his arch rival for Francis's friendship.
The group's tear-away extravagance is funded, unwittingly, by Francis's father, Lord Soulford, but when suddenly he cuts his son off, the friends are left floundering, until Francis embroils them all in a plan that will test not only their friendship, but also their very souls.