Brie couldn't have been more right. Franco plays Tommy Wiseau, the star and director of The Room, which is believed by many to be the worst film ever made. Franco's film looks at the making of the 2003 movie and the friendship between Wiseau and Greg Sestero – who is played by Brie's husband, Dave Franco – which ended up fuelling it. The Disaster Artist is actually based on the 2013 book of the same name written by Sestero, which doesn't hold back from exploring the behind the scenes weirdness that gave us "Oh hi, Mark."