Disney se High School Musical JR handel oor die hoërskool basketbalster, Troy Bolton, en die begaafde nuwe leerder, Gabriella Montez, se vriendskap. Hulle ontmoet mekaar in ‘n karaoke-kompetisie tydens ‘n familievakansie, min wetend dat hulle die skooljaar by dieselfde skool gaan studeer. Saam besluit hulle om vir die skoolmusiekblyspel in te skryf, maar word gefnuik deur die presidente van die dramaklub, Sharpay, en hulle onderskeie vriende. Uiteindelik vind Troy en Gabriella ‘n manier om hulle ware self te ontdek en word die hoofrolle in die musiekblyspel toegeken. Hierdie musiekblyspel is vol treffende oorwurms en opwindende danse terwyl dit terselfde tyd temas van vriendskap, aanvaarding en eerste liefde verken.

Disney’s High School Musical JR centers on the relationship between Troy Bolton, the high school basketball star, and Gabriella Montez, the new smart girl at school. Rediscovering each other at school, after meeting at a karaoke competition on vacation, their relationship and decision to audition together for the school musical are curbed by the school’s drama club president, Sharpay, and their well-meaning friends. Finally, Gabriella and Troy find a way to be themselves and are rewarded with the lead roles in the school musical. Full of catchy songs and exciting dance routines, this musical explores issues of friendship, first love, and acceptance.