Cylus Keltan wants nothing more than to stay out of the poisonous bed of greed and politics, but when his surrogate father throws himself from a mile-high window, he is forced back into the corrupt world he swore never to return to. With the help of Nero Graves, a cybernetic agent, he uncovers a plot to cripple the government and deploy an alien super plague with the potential to kill billions known as "Siren."Can they discover the link between his friend's death and Siren before it's too late?