Being the younger sister of one-fifth of the hottest boy band in the world has its perks. However Tanya Styles only sees the negative and disadvantages of it. So, Harry, playing the role of the big brother of Tanya, brings her to their tour dragging her best friend, Annie Wilson, with her. But what Tanya doesn't know is that three of her brother's band mates became interested in her, leaving her in a complicated love square. Can they cope with the heartaches? Or will Annie's decision lead the band to an end?

She doesn't remember anything. Their first date, their first kiss, the first time he bought her flowers, their first fight. She doesn't even know who he is. She's forgotten something horrible, something no one wants to remind her of. So what exactly happens when everything disappears?