"Full-time Mage Special: Mysterious Commission" is adapted from the novel "Full-time Mage" and is the Red Beast chapter of the animation of the same name. The protagonist, Mage Mo Fan, and his partner Lingling were involved in an old unsolved case because of the invitation of the mysterious Hunter King. After a series of adventures and investigations, it was discovered that all this was a conspiracy planned by a man named Red Beast. The Red Beast is growing step by step and approaching its ultimate goal by parasitizing on the bodies of demons such as Yi Qiu and Lu Kun. After a thrilling life-and-death battle, Mo Fan, with the help of Lingling, Mochizuki Qianxun and other friends, eliminated the Red Beast, but found that it was just one of its clones, and he had already become part of the Red Beast's conspiracy...