Diagnosed with Leber's Neuropathy, homicide detective Tess Avery quits the police force after nearly getting her partner, Jake Campbell, killed. Unwilling to accept help, or even admit her new reality, Tess turns to an assistive app to help navigate the world around her while still "passing" as sighted. Through the EyesUP app, Tess finds an unorthodox partner in Sunny Patel, an overly enthusiastic seeing eye guide working from her home in New York City who helps Tess investigate the brutal abduction of a young mother who may still be alive. But Sunny has a secret: she's an agoraphobe who only leaves her apartment through the eyes of her clients, and is hiding a violent event in her own past