Single father Greg is reeling from his wife Marie mysteriously walking out on her family. He is torn between obsessing over his ex and courting disaster with a new love interest.

As Greg and Brenna settle into domesticity, Marie tries to navigate life without her kids. But as her world becomes increasingly turbulent, she is forced to face up to living a lie.

When Marie tells Greg she wants the children back, the two go head to head in court. An epic, divisive custody battle exposes old wounds and digs into the truth of their marriage.