"In Nero's Rome, Calandra helps her father, a renowned sculptor, complete the most significant commission of his illustrious career. But then a catastrophic fire nearly destroys the imperial city, leaving Calandra reliant on a group of Christians--unusual individuals unlike any she has encountered before. Intrigued by their worship of the Son of an invisible God, Calandra grapples with her mistrust, only to find herself indebted to these believers as they help her rebuild her shattered world.