After the social animal Chen Mo fainted from overwork, his eyes mutated and he could see the emotions above each person's head accurately displayed in "lumens" - 3 lumens for happiness and 16,200 lumens for sadness. Emotions became quantifiable. He soon discovered that an organization called "The Reapers" was secretly extracting the emotions of ordinary people and making a business, and his depressed mother who was hospitalized was the target of being harvested. The "primal hope" unexpectedly awakened in his body is the only sixth primitive emotion in the world that cannot be harvested - this is his only weapon to leverage the entire plundering system.
