Elena, a young girl who lives in Mexico, dreams of being a glassblower like her father. When Papa rebuffs her dream by commenting, "Who ever heard of a girl glassblower?," Elena takes one of his old glassblowing pipes, disguises herself as a boy, and sets off to Monterrey, home of Mexico's "great glassblowers.” Along the way, she discovers that she can play sweet songs on the pipe, and when she finally reaches her destination, she creates beautiful ornaments, which are shaped by the tunes she plays on her pipe. Elena eventually creates a crystal swallow to carry her back home, where she disguises herself as an elderly man and shows her creations to Papa. When she finally reveals her identity, Papa realizes how special his daughter is.