When Sophie Taylor finds herself outlining her ultimate fantasy - to pay a man for sex - at her drunken 31st birthday party, all her friends seem to get the wrong end of the stick. Because suddenly everyone seems to be trying to make Sophie's dreams come true, from her on-off boyfriend Rex to the mysterious Mark Valentine. Everyone, that is, except Sophie herself.

Will Sophie put her money where her mouth wants it to be? Or are some things best kept in the realm of fantasy?