Modern girl Li Wenyin transmigrates into a Mary Sue magical world, entering a top magic academy through a lottery special recruitment. With no academy accepting her magic test, a series of twists leads her to enter the free-spirited Obsidian Courtyard, where she gets to know fellow disciples with distinct personalities such as Mu Feng, Pei Yuan, Qin Guanyu, and Yu Zhiyuan, forming a troublemaking squad. While dealing with bizarre and wild magic courses and cracking campus mystery cases, they confront dark magic forces, protecting each other amidst laughter and crises, and growing together.