In 1998, the story unfolds in a small, rural town in Pennsylvania, where Deb Callahan is navigating life as a 33-year-old single mother living with her teenage daughter, Bridget Callahan, and Bridget's young son, Jesse. Deb had Bridget when she was just 16, and the father has been absent from their lives. Their home is conveniently located across the street from Deb's older sister, Katherine, who is married to Terry and has children of her own. The relationship between Deb and Katherine is both loving and tumultuous; Katherine's more reserved nature often leads her to criticize Deb's reckless lifestyle and her relationships with men. This dynamic mirrors Deb's relationship with her own mother, Peggy.
The narrative takes a darker turn one evening when Deb is tasked with babysitting Jesse, allowing Bridget to go on a date with Tyler Hanrick, Jesse's father. Their relationship has been inconsistent, and when Deb wakes the next morning to find that Bridget has not returned home, panic sets in. As she desperately calls around, it becomes apparent that Tyler claims he and Bridget had an argument, and she left for a friend's house. However, Jenna, the friend, tells Deb that Bridget had indeed left, mentioning she planned on walking home alone.
Detective Sergeant Morris begins an investigation into the troubling disappearance of Bridget, and Deb's suspicions fall squarely on Tyler, whom she believes has harmed her daughter. Struggling with the agony of her daughter's absence, Deb finds temporary solace in Brett, a married man with whom she’s engaged in an affair. When Brett fails to meet her, her emotions overflow, leading to a confrontation with him and his wife, where Deb's anger manifests in a reckless destruction of property. Her descent into despair culminates in a self-destructive car crash, aiming for suicide but ultimately surviving unscathed.
Fast forward a few years, and Bridget’s case has turned cold, leaving Deb to raise Jesse mostly alone. She has entered into a relationship with Ray, a refinery worker who turns out to be controlling and abusive. Despite this, Deb feels the grip of financial dependency as she juggles her education at a local college. Ultimately, after a violent confrontation, she finds the strength to end that toxic relationship. Throughout the years, Deb continues to honor Bridget by holding vigils on her birthdays and eventually reconnects with Tyler, who recently finished rehabilitation for drug addiction. Their conversation reveals the lingering blame he harbors towards Deb for his struggles, yet she admits her long-standing feelings of doubt about his involvement in Bridget's disappearance have waned.
After graduating, Deb secures a job as a human resources supervisor at an assisted living facility, where Peggy eventually comes to reside after suffering a stroke. Encouraged by Katherine to start dating again, Deb embarks on a relationship with Chris, a friend of Terry's. Initially resistant to Chris's advances, the two found love quickly, marrying just eight weeks after they began dating. Chris forges a strong bond with Jesse as a father figure. However, their union becomes strained over time, uncovering infidelity on Chris's part, and Deb confronts him, leading to his departure from their home.
In a poignant twist of fate, 11 years after Bridget's disappearance, Sergeant Morris arrives at Deb’s workplace with devastating news—a serial killer has led them to the discovery of Bridget's remains in a shallow grave. This heart-wrenching moment propels Deb into a confrontation with Bridget’s killer as she seeks answers about her daughter’s fate. Later, Sergeant Morris takes Deb and Jesse to the crime scene, where they face the profound grief of the finality of their loss, with Deb collapsing in sorrow over her daughter's unmarked resting place.
Ultimately, hoping to find peace and a fresh start, Deb makes the transformative decision to sell her family home and relocate with Jesse. A garage sale marks the end of this chapter, during which Chris returns to profess his lingering feelings for her. Unmoved, Deb bids him farewell and takes Jesse to say their emotional goodbyes to Katherine, Terry, and Peggy before they set off toward their new beginning, driving away into the horizon, ready to embrace life anew.
