When Claire discovers her partner Maggie sleepwalking and acting strangely, she learns Maggie secretly joined a clinical trial for NANOcell, an experimental sickle cell treatment. What was meant to be a cure is now spreading through Maggie’s body like a mechanical infection. When Claire convinces Maggie to call for help, armed agents arrive—not to save her, but take her by force. As Maggie defends herself, Claire has the terrifying realization that the line between Maggie and the technology inside her is starting to erode.