Zhu Yun is pressured by her mother into becoming the class representative of the C programming class. Jian Hong forms a computer programming club and the members question Li Xun's ability to actually code. Zhu Yun goes to Li Xun's hideout to get him to turn in the homework for the programming class. He gives her the "homework" but it turns out to be an insidious virus that she can't remove from her computer. (Source: frankly at kisskh)