"It's a madcap adventure, full of vivid characters and breathless drone chases...[Burt] has given children and their parents something they desperately need: a way of talking about where we are now." ―New York Times Book Review  

In a future forever changed by a pandemic, a girl survives in total isolation. Like everyone else, twelve-year-old Cleo and her parents are sealed in an apartment without windows or doors. They never leave. They never get visitors. Their food is dropped off by drones. So they’re safe. Safe from the disease that nearly wiped humans from the earth. Safe from everything. The trade-off? They’re alone. Thus, when they receive a package clearly meant for someone else--a package containing a substance critical for a stranger’s survival--Cleo is stuck. A woman is dying. Cleo Porter has her medicine. And no way to deliver it. As a surgeon-in-training, she knows the clock is ticking. But people don’t leave their units. Not ever. Until now.