The near future. Tens of thousands of species are going extinct every year. And a whole industry has sprung up around their extinctions, to help us preserve the remnants, or perhaps just assuage our guilt. For instance, the biobanks: secure archives of DNA samples, from which lost organisms might someday be resurrected . . . But then, one day, it’s all gone. A mysterious cyber-attack hits every biobank simultaneously, wiping out the last traces of the perished species. Now we’re never getting them back.