Nemeses—powerful and mysterious demonic entities that fall from the sky and vaporize anything they touch. The only ones who can combat these creatures are Sorcerers, those who have survived an encounter with a Nemesis but were infected in the process. Seth, a Sorcerer from Pompo Hills, sets out on an adventure to exterminate all these Nemeses. Accompanying him are Doc and Mélie, fellow Sorcerers who share his ideal. Their main objective is to bring about a world where Sorcerers are no longer persecuted for being infected, and to that end, desire to destroy the source of the Nemeses themselves: the mythical Radiant.

A villa, involved in strange circumstances in the 1990s, is bulldozed and new homes are built on top. The ostensibly peaceful town and its inhabitants will soon have its cover blown wide open. Mysterious forces are at play, rooted in a disturbing truth.

The aloof high schooler Mo Fan has found himself in a universe similar yet distinctly different from his own mundane one; it is a place where magic has replaced the essence of science. Here, the most capable students are taught to master the wonders of spellworking to fend off large devastating beasts that lurk in the forests surrounding the city. Like his previous life, Mo Fan remains the son of a poor laborer and the older step-brother to a crippled sister. Despite these disadvantages, he dreams of attending a magic school to become a magician—a highly respected and lucrative trade—in order to repay his father for his hard work. Mo Fan is accepted into a renowned magic institution. However, rumors spread about his poverty and lack of magical ability, labeling him as the laughing stock of the school. Nonetheless, Mo Fan manages to harness not only the powerful fire element, but also the rare lightning element! Now armed with dual abilities, what dangerous encounters will the versatile mage face?

The fourth season takes place after the Mechanical City has collapsed and the Mohists are almost eliminated. The Qin Empire plans for a period of peace and prosperity and the Emperor utilizes a huge amount of labor to build the Great Wall and plans more sophisticated programs. There is apprehension in the city about the function of the giant boat Mirage which appears off the coast. Various rebel factions came together in Shanghai to defeat the Emperor's ambition. The Emperor and his forces, including the Quicksand group, the Yin-Yang School, Net Trap Organization and swordsman Shengqi are all arraigned against the rebel group comprising the Mohists, Confucianists and the Taoists. Tianming's education and training continue as he is faced with more and more challenges as leader of the Mohists. (Source: Qin's Moon Wiki)