A dysfunctional family travels to Cuernavaca to celebrate their grandmother’s wedding.
A group of mariachis receives a letter to be part of the National Mariachi Contest in Mexico City. In order to be able to win they will need to travel together and solve their differences since their prime was 30 years ago.
When the grandmother decides that it is time to put the family affairs in order, the fights begin to inherit the house. (A sequel to Grandma's Wedding.)
