In rural Virginia, Young and Pak Yoo run an experimental medical treatment device known as the Miracle Submarine: a pressurized oxygen chamber that patients enter for "dives", used as an alternative therapy for conditions including autism or infertility. But when the Miracle Submarine mysteriously explodes, killing two people, a dramatic murder trial upends the Yoos’ small community. Who or what caused the explosion? Was it the mother of one of the patients, who claimed to be sick that day but...