Out of prison early for good behavior, Letty Raines (Michelle Dockery) is trying hard to be a better person. But after she overhears a hitman (Juan Diego Botto) being hired to kill a man's wife, Letty sets out to derail the job and finds herself on a collision course with the killer, entangling herself in a dangerous and seductive relationship.

Javier (Juan Diego Botto) forces Letty (Michelle Dockery) to help carry out his next job by making her pose as his wife at an upscale resort in the Smoky Mountains. Letty befriends the target's wife as instructed, but when she attempts to escape with the woman, Letty's plan backfires,,digging her into a much deeper hole with Javier.

Letty (Michelle Dockery) and Javier (Juan Diego Botto) are in a race against time to tie up all the loose ends of the violent crime Javier committed, each blaming the other for the trouble they're in. Letty's parole officer, Christian (Terry Kinney), lays down the law: if Letty doesn't show up to her next check-in, he will send her back to prison.

Letty (Michelle Dockery) attempts legitimate "good behavior" when she goes back to her hometown to be close to her son, Jacob (Nyles Julian Steele), and finds a clever workaround for the restraining order that has kept her one-thousand feet away from him. Meanwhile, while trying to protect her friend Tiffany (Collette Wolfe) from the truth about her husband, Letty's attempt at being good explodes in her face.

Desperate to escape the mess she inadvertently made in her hometown, Letty (Michelle Dockery) rejoins Javier (Juan Diego Botto) on the road. He's on the way to see his sister Ava (Maria Botto), who has information about the mysterious phone calls Javier has been getting from his estranged family. Christian (Terry Kinney) tracks Letty down to arrest her, but Letty turns the tables and pulls Christian into a scheme of her own making.

Letty (Michelle Dockery) returns to her hometown armed with a new plan to take custody of her son, Jacob (Nyles Julian Steele), with Javier's (Juan Diego Botto) help. But Letty is confronted with the stark realities of motherhood when a day with her son turns into a crisis that could send her back to prison.