It is your eighteenth birthday and one of your parents must die. You are the one who decides. Who do you pick?;;In a dying world, the Offset ceremony has been introduced to counteract and discourage procreation. It is a rule that is simultaneouslyaccepted, celebrated and abhorred. But in this world, survival demands sacrifice so for every birth, there must be a death.;;Professor Jac Boltanski is leading Project Salix, a ground-breaking new mission to save the world by replanting radioactive Greenland with genetically-modified willow trees. But things aren’t working out and there are discrepancies in the data. Has someone intervened to sabotage her life’s work? ;;In the meantime, her daughter Miri, an anti-natalist, has run away from home. Days before their Offset ceremony where one of her mothers must be sentenced to death, she is brought back against her will following a run-in with the law. Which parent will Miri pick to die- the one she loves, or the one she hates who is working to save the world?