Dystopian Fiction - Survival Aptitude Test: Sound (Book 1 of The Extinction Odyssey Series) by Mike Sheriff

One New Life Form. Two Mortal Enemies.
Three Deadly Threats.

One enemy has been vanquished, but at a tremendous cost to life and limb. Another remains armed and dangerous inside the city-state’s Librarium, poised to unleash the unthinkable.

Farther north, two sinister threats loom in the shadows, awaiting their opportunity to strike.

The dangers they pose will not only imperil the lives of every denizen, but the survival of every human on the blighted Earth.

Will Daoren and Heqet reunite in time to overcome the threats . . . or will the Cycle of Extinctions finally claim its last species?