Celtic Submari offers a new model of football relationships based on respect and affection not sectarianism, hatred or bitterness. It draws from the lessons of the Villarreal Celtic Submari Supporters club formed after 10,000 Celtic supporters visited Vila-real in 2004 and impressed the locals with their positive attitude. The book offers lessons from the Villarreal model to tackle some of the problems around the sectarian bitterness and hatred that sours football in Scotland