In order to get donations for an educational project, Mission 21 relies on the oldest medium for its mailing: the book.

Not one book, strictly speaking, but 20,000 different ones. Every single novel is written on behalf of the recipient. In the story, an award-winning young author takes the reader to where his donation is urgently needed: To Karim, a boy in a refugee camp in Central Africa. On page 20 the novel is suddenly interrupted and the reader is asked to continue writing the story of Karim. Because the more book pages the reader donates, the better the story becomes.