Widow Abby Abbott is having serious money problems and has to dip into the family trust in order to pay for her daughter Susan's college tuition. The catch Abby must also become a co-ed or she can't touch the money. After passing her entrance exams, Abby goes to college and becomes very popular, especially with a handsome English professor whom Susan has a crush o
爱丽丝(邦尼·亨特 Bonnie Hunt 饰)和乔治(查尔斯·格罗丁 Charles Grodin 饰)带着三个孩子瑞思(尼科洛·汤姆 Nicholle Tom 饰),泰德(Christopher Castile 饰)与艾米丽(Sarah Rose Karr 饰)住在城郊的大房子里,生活过得平静而又幸福,直到一天,一只可怜又可爱的流浪狗出现在了纽顿家门口。在三个孩子的苦苦恳求下,小狗成为了纽顿家新的一员,取名贝多芬。
时间流逝,长大的不仅仅是纽顿家的三个孩子,还有贝多芬,在短短几个月的时间里,原本娇小可爱的贝多芬已然成为了一只庞然大物,在不断制造麻烦的同时,贝多芬也为纽顿一家带来了深深的快乐。贝多芬的存在吸引了兽医瓦尼克(迪恩·琼斯 Dean Jones 饰)的注意,邪恶的医生开始想尽千方百计,企图将贝多芬据为己有。