Lizzie is a librarian at the university where she was once a promising graduate student. She dropped out years ago in an attempt to rescue her younger brother from the throes of addiction. But one day her old mentor, Sylvia, asks for a favor. She wants Lizzie to answer the mail for her famous doom-laden podcast, Hell and High Water. Soon she is fielding questions from left wingers worried about climate change and right wingers worried about the decline of western civilization. As Lizzie dives into this polarized world, she begins to wonder what it means to keep tending your own garden once you've seen the flames beyond its walls. And all the while the voices of the city keep floating in--funny, disturbing, and increasingly mad.