Penny treats readers of her blog to the inside scoop on her friendships, her school, her ‘crazy’ family, and the panic attacks that threaten to take over her life – but of course, no one in her day-to-day life knows Penny is ‘Girl Online’.

When her family relocates to New York, Penny meets a handsome, guitar-strumming American called Noah. As she begins to fall in love, she of course captures every moment of it on her blog…

Life, however, is not the perfect picture that it appears to be because, as it turns out, Noah has a secret as well; one that could to ruin not only Penny's anonymity - but  - more importantly - it could destroy her closest friendship too.