Joseph Kylander's childhood in early 20th century San Francisco has been shaped by his widowed father's obsessive photographic project and by his headstrong cousin Karelia's fanciful storytelling and impulsive acts. The 1906 earthquake upends their eccentric routines, and they take refuge with a capricious patron and a group of artists looking to find meaning after the disaster. THE BOOK OF LOST LIGHT explores family loyalty and betrayal, Finnish folklore, the nature of time and theater, and what it takes to recover from calamity and build a new life from the ashes.