She never presumed she herself would live out her natural life, so she wouldn't mind leaving this world through an untimely death. Hornclaw is a sixty-five-year-old female contract killer who is considering retirement. But while on an assassination job for the 'disease control' company she works for, Hornclaw makes an uncharacteristic error, causing a sequence of events that brings her past well and truly into the present.

Threatened with sabotage by a young male upstart and battling new desires and urges when she least expects them, Hornclaw steels her resolve, demonstrating that no matter their age, the female of the species is always more deadly than the male.