A textbook for high school and university students on traditional logic.

Once a millennium, mankind unknowingly teeters on the precipice of extinction. As our inherent negativity compounds upon itself -- gathering speed like a loose boulder rolling down a dark hill -- so does it fuel the most evil of beings. Despite this, hope still exists in the form of a man. Throughout the years, humanity's preservation has been quietly carried out by a group of loyal knights. The Guardians were bound by blood. But time has ravaged their ranks, and now only one remains to fight against the many. Tobias Ramsey, the last of these knights, must journey to locate the fabled Trinity...