At a cantina, a man tells his friend a Mexican version of "Cinderella". Leetle Señorella's "strapmother(stepmother)" and her "strapsiblings" make her do all their dirty work. They won't let her go to Prince Don Jose Miguel's big fiesta, but her fairy godmother comes through with a gorgeous wardrobe and a beautiful "transporte" drawn by a team of mules (formerly cockroaches). At the fiesta, the prince is bored out of his mind while the girls, including Senorella's strapsiblings, dance to impress him and fail miserably. However, he immediately becomes smitten when he sees Señorella. She and Prince Don Jose tango the night away, and his father, Don Miguel, is happy. However at midnight Señorella vamooses, leaving her glass huarache (a Mexican sandal) behind.
Prince Don Jose has every girl in the kingdom try on the glass huarache, hoping to find the mysterious princess he fell in love with. However, none of the girls' feet fit the tiny shoe. Before arriving at the house, the strapmother intentionally tosses a tied up Señorella outside in the mud with the pigs out of fear that she'll be revealed as the mysterious princess and win Don Jose's love. Both her daughters try the shoe, but their feet are too big. Prince Don Jose sees a small foot sticking out from the window and he goes to it. He places the huarache on the foot and it fits. Don Jose sees a pig help Señorella up from the mud and she is revealed to be his mysterious princess. After having her cleaned up, she and Don Jose are married. The man revealed that Señorella's story may have ended happily ever after, but his own story didn't. When his friend asks him what happened to the strapmother and her daughters, the man sadly reveals that he's married to her. This proves to be true as she picks him up and forcibly takes him home.