Nacho (Jack Black) is a man without skills. After growing up in a Mexican monastery, he is now a grown man and the monastery's cook, but doesn't seem to fit in. Nacho cares deeply for the orphans he feeds, but his food is terrible - mostly, if you ask him, a result of his terrible ingredients. He realizes he must hatch a plan to make money to buy better food for "the young orphans, who have nothing" (...and if in doing so Nacho can impress the lovely Sister Encarnacion, that would be a big plus). When Nacho is struck by the idea to earn money as a Lucha Libre wrestler, he finds that he has a natural, raw talent for wrestling. As he teams with his rail-thin, unconventional partner, Esqueleto (the Skeleton), Nacho feels for the first time in his life that he has something to fight for and a place where he belongs. As Lucha is strictly forbidden by the church elders at the monastery, Nacho is forced to lead a double life. Disguised by a sky blue mask, Nacho conceals his true identity as he takes on Mexico's most famous wrestlers and takes on a hilarious quest to make life a little sweeter at the orphanage.