San Francisco, 1906.

When Cora leaves her house in the early morning hours of April 18th, she makes her way to the San Francisco docks to look for her father, the earth begins to shake and suddenly, Cora realizes that she's not just in trouble—she's in danger.

Soon after, the last thing Cora remembers seeing is a tall building swaying overhead, before everything goes dark.

Together, Cora, Chi, and Oliver begin a desperate search for their missing families,  while trying to evade terrifying fires and a gang of thieves who are pursuing Cora and a valuable secret she holds.