In 2039, Linzhou entrusts public safety to a predictive System called "Mirror Tide."
Lin Wu, a suspended emergency dispatcher, hears a girl's final sixty seconds from forty-seven minutes in the future through an old radio her father left behind.
She rushes to the scene and changes the outcome of a death.
But soon, a second and then a third cry for help come through, and the people calling for help are precisely the ones Mirror Tide is most likely to overlook.
Every time she listens more deeply, Lin Wu risks losing some of her hearing, or even a memory of her own.
As a cold case from Blue Harbor twelve years ago resurfaces, she gradually realizes that Mirror Tide isn't failing to see certain people. It sees them, then decides not to let everyone else see them.
With a super typhoon bearing down on Linzhou, its limited rescue resources must be redistributed.
This time, Lin Wu faces more than just the question of whether she can save one person.
The question is:
Who has the right to decide who deserves to be saved?