He's hot, he's horny, he's...blue? Good-time girl Cally Morgenstern has never paid much attention to the robots her father built to take care of her family. That is, until one night when her vibrator runs out of batteries. And hey, if you've got a six-foot hunky robot offering to relieve your sexual frustration, you're not going to say no, right? Even if he is sort of, well definitely...blue? Cally quickly realises that Blue isn't your average robot. He's rapidly acquiring a personality, for one thing. And an avid interest in human sexuality, particularly with regards to Cally. Her family don't approve, but that's never stopped Cally before. She's eager to teach Blue all she knows about sexual pleasure, even if they have to build him a few necessary parts in the process. And even if Blue's explorations of human feelings touch her own, very human, heart.