San Francisco, 1900. The Gilded Age. A fantastic time to be alive for lots of people... but not thirteen-year-old Lizzie Kennedy, stuck at Miss Barstow's snobby school for girls. Lizzie's secret passion is science, an unsuitable subject for finishing-school girls. Lizzie lives to go on house calls with her physician father. On those visits to his patients, she discovers a hidden dark side of the city -- a side that's full of secrets, rats, and rumors...