In a future where reality has been augmented and biology itself has been hacked, the world€s food supply is genetically modified, superior, and vulnerable. When gene mapper Hayashida discovers that his custom rice plant has experienced a dysgenic collapse, he suspects sabotage. Hayashida travels across Asia to find himself in Ho Chi Minh City with hired-gun hacker Yagodo at his side€"and in mortal danger€"as he pushes ever nearer to the heart of the mystery.