曾拥有过辉煌风光年代的一家歌剧院正逐步走向没落，更面临被银行抵押没收的命运。现任老板考拉巴斯特（马修·麦康纳希 Matthew McConaughey 配音）不愿见父亲毕生的心血就此终结，于是决定策划一场歌唱选秀比赛，却没留神把奖金印成了他根本无力承担的10万美元。受到奖金和歌唱梦想的鼓舞，猪妈妈罗茜塔（瑞茜·威瑟斯彭 Reese Witherspoon 饰）、少女豪猪艾什（斯嘉丽·约翰森 Scarlett Johansson 饰）、老鼠歌手麦克（塞斯·麦克法兰 Seth MacFarlane 饰）、害羞的小象米纳（托瑞·凯利Tori Kelly 饰）、大猩猩强尼（塔伦·埃格顿 Taron Egerton  饰）等音乐爱好者都纷纷前来应征。
　　他们有着各自难以逾越的障碍，而为了各自的梦想，有竭尽全力，追逐哪怕一点点微茫的希望……

　　故事梗概:
　　由领队布鲁贝克等三名宇航员驾驶的美国宇宙飞船《摩羯星一号》因质量不好未能起飞,宇航主任凯洛威博士为骗取国会的预算,强迫宇航员参加了一场在摄影棚内模拟飞行同时进行电视实况转播的骗局.为了骗局不被戳穿,还决定宣布飞船降落时因事故机毁人亡,秘密杀害宇航员.宇航员冲出摄影棚后,两人被打死.死里逃生的布鲁贝克出现在追悼会上,揭露了事实真相.

　　Just before Christmas, Lee Leander is caught shoplifting. It is her third offense. She is prosecuted by John Sargent. He postpones the trial because it is hard to get a conviction at Christmas time. But he feels sorry for her and arranges for her bail, and ends up taking her home to his mother for Christmas. Surrounded by a loving family (in stark contrast to Lee's own family background) they fall in love. This creates a new problem: how do they handle the upcoming trial?

　　The cast of «High School Musical: The Musical - The Series» share anecdotes of memorable holidays from their childhoods, best presents, favorite traditions, family photos, and New Year's resolutions.