A witch called Woori made Voodoo dolls which resembled EXO , day by day darkness fill them air , not till they escaped from the curse making the witch angry she got back at them , she recieved a mission from her boss to go far away to curse some people for 5 years she had to let her daughter Jessica get in her place cursing the luck of EXO   "I will be your Voodoo Doll Take out everything on me