Eric Cartman dreams of himself visiting Casa Bonita for Kyle's birthday, enjoying its amenities such as the Black Bart's Cave, cliff divers, and listening to a Mexican band. Just as Cartman imagines himself dancing in front of the band to the tune of "Jarabe Tapatío", he gets interrupted with an image of Kyle, who tells Cartman that he is not invited to the party.
The band is seen roaming around the restaurant and performing in front of the patrons. Their names are revealed to be, Hector, Jorge, Rafael, and Manuel.
Each member wears a mariachi costume. One of its members does not wear a sombrero.