After the worst pandemic the world had ever seen, Juniper Park a mathematician known for her incredible brain and being headstrong, lives in the distruction of a fallen planet. Running from an unlawful government tracking people like her, who are regarded as "the immune“. After a dark past, she must find a way to cure her father and so may others from the disease that killed billions of people and there is only one man who might be able to help, the only problem is...he has been dead for nearly 300 years. With the help 4 scientists, she must travel back in time before it's to late.