Touring with one direction

Hope Chance is an American international pop start along with her 13 year old brother Greyson Chance, one day there manager tells them there going on a world wide tour. But there's a small catch. They will be touring with none other than One direction! Neither Hope or Greyson no who One direction are but there about to find out. Since Hope would be the only girl there she manages to persuade her manager to let her 4 best friends come (4 girls) but what happens when Hope starts to fall for 1 of the boys?....