Harper Wilde finally has the life she always dreamt of. Her day job as a tattoo artist pays for her late nights in dive bars. Her tight-knit group of friends has become her chosen family. She even has a boyfriend who sees past her walls from her childhood trauma and understands the real her.

But on her twenty-fifth birthday, her world is turned upside down. A call from her estranged mother reveals that her father—the man who abandoned her—is dead. The bigger shock is that he left behind two children Harper never knew existed: a brooding teenage daughter, Frances, and a bright-eyed son, Eddie. With her mother's custody petition tied up in red tape, Harper becomes their reluctant guardian.

Overnight, Harper's carefree life is replaced with teenage hormones, bed-wetting, and the daunting realization that her father's neglect didn't extend to his other children. To make matters worse, her strained relationship with her mother grows even more difficult the longer they navigate this crisis together.

For a woman who's only ever had herself to look out for, becoming someone else's lifeline is a shock to her system. But as her old life clashes with her new responsibilities, Harper begins to question whether the independence she fought so hard to obtain is really the life she wants.