Coco is a 2017 American 3D computer-animated musical fantasy adventure film produced by Pixar Animation Studios and released by Walt Disney Pictures. Based on an original idea by Lee Unkrich, it is directed by Unkrich, and co-directed and co-written by Adrian Molina. The story follows a 12-year-old boy named Miguel who accidentally visits the land of the dead where he seeks the help of his musician great-great-grandfather to return him to his family among the living. The concept of the film is based on the Mexican holiday of Día de Muertos. The screenplay was penned by Adrian Molina and Matthew Aldrich, and the story by Unkrich, Molina, Jason Katz, and Aldrich. Pixar began developing animation in 2016. Unkrich and some of the film's crew members also visited Mexico for inspiration. Composer Michael Giacchino, who had worked on prior Pixar animated features, composed the score. Coco premiered on October 20, 2017 during the Morelia International Film Festival in Morelia, Mexico. It was released in Mexico the following week, the weekend before Día de Muertos, and became the highest-grossing film of all-time in the country. It was released in the United States on November 22, 2017 and has received highly positive reviews, with critics praising the animation, vocal performances, musical score, emotional story and respect to Mexican culture.