A global phenomenon is rewriting the laws of biology, causing men over fifty-five and women between eighteen and forty to suddenly and inexplicably switch their ages and genders. No one understands it. No one can stop it. Maxine thought she could stay on the sidelines, supporting her brilliant, boyfriend-turned-girlfriend Joe-an audacious biotech pioneer breaking new ground with brain-to-brain communication. But when the transformation strikes Maxine, her reality is flipped upside down. Now facing an unexpected future, Max must grapple with their identity, struggling to align who they were with who they have become. Can they reclaim control over a life that's no longer theirs, or will they be swept away by the changes they never asked for?