You were walking to school this morning and you passed out. But where are you now? You woke up in a strange unfamiliar class, the windows were closed and the exits too. But your friend Xiao is sitting next to you, maybe he knows something? You asked him, but he doesn't know what's going on. Instead, you come to the gym with other students. They seem to be in shock too... Xiao: How did we all get here...? you and your friend look at each other worriedly