Joris Lachaise's approach to filmmaking is based on the transition between his studies in philosophy to cinema. In 2005, he worked with Jean-Pierre Krief on Chronicle of a Trial Foretold, a film about the trial of Saddam Hussein by the Iraqi Special Tribunal. In 2009, he co-directed with Thomas Roussillon Like a bird in a fishbowl, the chronicle of a common struggle of asylum, gypsies, and homeless people seekers in Angers. In 2011, he directed Convention: Black Wall / White Holes, a film about the 50th anniversary of Mali's independence that won the FIFAI prize and was selected for the États généraux du documentaire in Lussas, France. In 2014, his film, Ce qu'il reste de la folie, was made in a psychiatric hospital in Senegal and won the Grand Prix at the FID Marseille festival before being selected for numerous festivals around the world. The film was released in French theaters in June 2016.