The world is suddenly struck by a bizarre "emotional plague." Without warning, people are plunged into the depths of a single emotion: some laugh for seven days and nights until they die of exhaustion, some are frozen in fear like statues, and some dissolve into puddles of tears from overwhelming grief. Yun Jue is the only person immune to the emotional infection, not because he is strong, but because his emotional core was completely destroyed when he was ten.
He joins the mysterious "Emotional Containment Center." His official job is to hunt down emotional entities that have run amok, but in truth, he is searching for his lost childhood memories. When he meets Tan Ya, a girl who can freely control other people's emotions, he discovers that behind the emotional plague lies a shocking conspiracy about "the collective evolution of humanity": someone is trying to rewrite the human soul through emotion.
