Ver Cuevana2. Over the past four decades, artist Isaiah Zagar has covered more than 50,000 square feet of Philadelphia with stunning mosaic murals. In A Dream is a documentary feature film that chronicles his work and his tumultuous relationship with his wife, Julia. It follows the Zagars as their marriage implodes and a harrowing new chapter in their life unfolds. An exploration of the fallout that ensues when the line between art and life is blurred beyond distinction.