When motorcycle aficionados Mike Davis and Grant Peterson conceived their Born Free experience, they had no idea their little bike show would grow into the grandest and most eagerly anticipated celebration of custom motorcycle style and culture in the world. Born Free's location in Southern California - the heart of American motorcycle customizing - only intensifies this event's impact and allure. "Born Free 4" gives a behind-the-scenes peek into the planning and craftwork required to bring hundreds of motorcycle-industry players, 3,000 show bikes and over 10,000 bikeriders and rabid fans to the rolling hills and green pastures of SoCal's beautiful Santiago Canyon for a day of music and machinery among great friends.