One of the worst things that can happen to a mother is if one of her children disappears.
But in Mary's case, she has two other children to take care of and must give everything to stay as strong as possible for them. And even though a mother will never truly stop looking, at some point she has to find a way to make peace with it.
With years, or even decades passing, wounds will heal and the memory will fade, but when the police get an unexpected tip nearly 40 years after Mary's son's disappearance, it changes everything...