The Gerard family has lived a charmed life. Carl is a highly successful residential developer with millions in the bank who married his high school sweetheart, Becky, and they have a beautiful daughter, Meghan. But when Meghan is suddenly struck with a mysterious illness that starts out as chronic headaches and joint pain but progresses rapidly to affect her cognitive ability, the family begins to fracture as they search desperately for a diagnosis and and a cure for Meghan’s suffering.

Dr. Zachary Fisher, a pediatrician and the foremost expect on a rare mitochondrial disease, might just be the answer to their prayers. After the death of his own son, Dr. Fisher dedicated his life to finding a way to cure the disease with a passion that borders on obsession, and he is convinced that Meghan is suffering from the same illness. However, family secrets and clashing medical opinions begin to raise questions about the puzzling nature of Meghan’s illness. As the Gerards grow more and more suspicious of each other and their medical team, they must also race against the clock to decide whether to give Meghan a dangerous test that could prove once and for all what — or who — is responsible for her condition.