When Noah invites Penny on his European music tour, she can't wait to spend time with her rock-god-tastic boyfriend. But, between Noah's jam-packed schedule, less-than-welcoming bandmates and threatening messages from jealous fans, Penny wonders whether she's really cut out for life on tour. She can't help but miss her family, her best friend Elliot . . . and her blog, Girl Online.Can Penny learn to balance life and love on the road, or will she lose everything in pursuit of the perfect summer?