A 30-minute documentary on the altars that are built to remember and honor the deceased on the Day of the Dead. Popular in Latin America and parts of Asia, this tradition is based on the belief that the spirits of the dead return from the underworld each year for one day only. In recent years, the celebration has been adopted in many U.S. cities and the themes of the altars have evolved, so that they now are used to call attention to social concerns.