Three years have passed in a hurry. Troy (Zac Efron) and his girlfriend gabriella (Vanessa Hudgens) are about to graduate and face the situation of going their separate ways. Although they both hope to continue studying at a university and continue their feelings, it is a pity that both their family and their own ambitions have caused them to have great differences and quarrels. However, they decided to hold a musical with other companions of the wildcats to commemorate the good times of high school and look forward to a better future. Gabriella received a notice of honors course at Stanford University, and the course date happened to conflict with the date of the graduation prom. Facing the choice, she didn't know where to go. After Troy knew it, although he was reluctant to separate, he still persuaded Gabriella not to give up this opportunity and not to bury his life. In the end, Gabriella finally decided to leave, and she didn't come back on the eve of the graduation prom... In the end, can Troy and Gabriella's love come to fruition?