Nacho (Jack Black) is a young man who was raised in a monastery in Mexico and now works there as the cook. Fueled by his passion for wrestling, he dons a mask and cape and picks up a partner to compete in a local Lucha Libre tournament to try for the $200 prize so he can buy better food for the kids and achieve respect. When a new nun, Sister Encarnacion (Ana de la Reguera), arrives at the monastery, he tries to win her adoration as well while attempting to prove that being a Luchador (wrestler) isn't a sin and win the grand prize at a battle royal tournament so he can buy a bus for the kids.