Vincent Macken (Liam O Mochain) has written what he thinks is the best post modern novel ever. His novel 'The Daughter of Conn', is a Celtic quest saga set somewhere in Ireland 200 years ago or thereabouts. When he overhears literary agents at a book fair ridiculing his masterpiece, he vows to prove his detractors wrong. He hires Aisling Arrigan (Antoinette Guiney), an aspiring filmmaker, to document his novel on video. The novel takes on a life of its own as she is more interested in making a documentary about him. The struggle begins. Vincent finally decides that what he has created has the potential for a hit movie. He goes to the Venice film festival, blags a press pass and tries to convince Hollywood stars to come to Ireland and take part in his forthcoming movie, 'The Daughter of Conn'. The result is not quite what he expected. "The Book That Wrote Itself" is a first in movie history, it's got Hollywood celebrities playing cameo roles and they don't even know about it. The filmmakers were able to use the unauthorised cameos as their contributions were made while they were publicising their public image which is deemed public domain.