With a plot described by the author and numerous critics as a modern adaptation of Romeo & Juliet, High School Musical is a story about two high school juniors from rival cliques. The protagonists are Troy Bolton (Zac Efron), a basketball team captain, and Gabriella Montez (Vanessa Hudgens), a shy transfer student excelling in math and science. Together, they try out for the lead parts in their high school musical, and this causes division among all the school's students. Despite other students' attempts to thwart their dreams, Troy and Gabriella aim to resist peer pressure and rivalry and wish to inspire others along the way not to "stick to the status quo. " However, they have to battle high school diva Sharpay Evans (Ashley Tisdale) and her twin brother Ryan (Lucas Grabeel). Sharpay and Ryan both seek to sabotage the friendship and romance between Troy and Gabriella and gain the leads in the school musical.