Physics wunderkind Fleur Robins, just a little odd and more familiar with multiple universes than complicated affairs of the heart, is cast adrift when her project to address the climate crisis is stalled. Worse still, her Ethiopian-born fiancé Assefa takes off right after her 21st birthday party to track down his father, who’s gone missing investigating Ethiopian claims to the Ark of the Covenant. Fleur is left to contend with the puzzle of parallel worlds, an awkward admirer, and her best friend Sammie’s entanglement with an abusive boyfriend. Assefa’s reconnection with a childhood sweetheart leads Fleur to seek consolation at Jane Goodall’s Gombe Stream Chimpanzee Reserve, but it’s through a bumbling encounter with her rival that the many worlds of Fleur’s life begin to come together. In the experience of tizita—the interplay of memory, loss, and longing—Fleur is flung into conflicts between science and religion, race and privilege, climate danger and denial, sex and love. With humor, whimsy, and the clumsiness and grace of innocence, Fleur feels her way through the narrow alleyway between hope and despair to her heart’s sweetest home.