As the captain of the most prestigious demon-killing mercenary team in the Human League, Liang Yuming's daily routine is to lead his team members to hunt monsters wherever monsters are found. Due to the inexplicable increase in monsters, Liang Yuming had to find new team members after two missions. By chance, he found Qi Tongan, who was also the captain of the demon-slaying mercenary. The two teams merged and Liang Yuming had a new partner. In each mission, the two gradually became familiar with each other, and Qi Tongan discovered that Liang Yuming was not as calm and composed as he usually showed...
At the same time, the monsters' reactions became very abnormal. Not only did their numbers increase, but their behavior in some things also became very strange. As the storm approaches, Liang Yuming's mental illness gradually comes to light, and at the same time, there is a shocking secret about the monster...