Núria, a single-by-choice barista with a little resentment for the "crazy cat lady" label, is a member of The Meow-Yorkers, a group in Brooklyn who takes care of the neighborhood's stray cats. On her volunteering days, she starts finding Post-it notes left by a secret admirer in an area where her feeds her favorite stray--a black cat named Cat. Like most felines, he is both curious and observant, so of course he knows who the notes are from. Núria, however, is clueless.

Are the notes from Collin, a bestselling author and self-professed hermit with a weakness for good coffee? Are they from Lily, a fresh-out-of-high school Georgia native searching for her long-lost half sister? Are they from Omar, the beloved neighborhood mailman going through an early midlife crisis? Or are they from Bong, the grieving widower who owns Núria's favorite bodega?

When Cat suddenly falls ill, these five strangers find themselves bonding together in their desire to care for him, and discover that chance encounters can lead to the meaningful connections they've all been searching for.