where willy went where willy went where willy went is a british children's novel written and illustrated by nicholas allan. where willy went authornicholas allanillustratornicholas allancover artistnicholas allancountryunited kingdomlanguageenglishpublished2 february 2006publisherpenguin bookspages32isbn978-0-37-583030-3 oclc1160652542 the book is about a sperm named willy who lives inside mr browne. just like other 300 million sperms, willy races trying to catch the prize, an egg. this book is written in an innocent, warm, accessible language and can be easily read by young children. it is also a useful guide for parents in need of simple explanations for facts of life.