Maria came to Rapp's house in Feng Te and found him a widower with seven children. His long life in the navy and the grief of his dead wife made him treat his children as strictly as soldiers. Soon, Maria understood the reasons why the previous mentors left. It turns out that children can't get their father's love and always play tricks on their teachers to attract their father's attention.
The colonel asked Maria to be as strict as he was, but Maria didn't listen. Instead, she won the friendship of the children with her natural gentleness and kindness. During the absence of the colonel, she sewed casual clothes with curtains for each child, led them to play in the garden pool, had a picnic in the beautiful Alps and taught them to sing. Children's original stagnation and melancholy are gradually replaced by music and laughter.
Soon, the colonel went home, bringing back Uncle Mike, whom the children liked, and Baroness elsa Schrade, the colonel's girlfriend, whom the children didn't like very much. The colonel was very dissatisfied with Maria's behavior, but when he heard the children singing for the baroness, he was very moved because Maria brought back music that was not available at home after his wife died. Maria also prepared the puppet show Lonely Shepherd with the children. The colonel was attracted by Maria's enthusiasm for infecting others.
A few days later, the colonel and the baroness held a grand dance together, and the children also sang at the dance. At the dance, Maria showed the children the Austrian folk dance "Lian Enderla". Unexpectedly, the colonel came and danced with Maria. At the end of the dance, the two looked at each other and their love was clear at a glance. All this was noticed by the baroness. That night, she suggested that Maria go back to the monastery. Maria was afraid that her feelings for the colonel were getting deeper and deeper, so she left quietly.
After Maria left, the baroness tried to please the children, but failed. The children were even sadder when they learned that the colonel was going to marry the baroness. They went to the monastery to look for Maria, but they couldn't see her. Maria confessed to the dean her love for the colonel and her confusion about life. The dean told her that even if she climbed every mountain in the world, she should summon up courage and find her true love. So Maria went back to Lapp's home in Feng Te. When Maria came back, the baroness found that she could not recover the affection between Maria and the colonel. She voluntarily withdrew from the engagement, and the Colonel and Maria confided in each other. Soon, they got married.
Unfortunately, their lives are not always happy. When they were still on their honeymoon, the German Nazis occupied Austria. Even Rove, the beloved young man of his eldest daughter Lisa, became a Nazi. When they returned to Salzburg, they found Nazi flags everywhere. The colonel and Maria didn't agree to hang Nazi flags at home, but when they were away, Uncle Mike, who was in charge of taking care of the children, signed them up for the Salzburg Music Festival. As soon as the colonel got home, he received a telegram from the Nazis asking him to report to the Nazi navy immediately. The colonel, who had always hated the Nazis, decided to lead his family out of Austria. When they left the villa at night, they were stopped by Nazis who had been hiding outside the door to watch them, so the colonel explained that they left to participate in the Hillsborough Music Festival and took out the program as evidence. Accompanied by the Nazis, they came to the venue and performed songs prepared by the children. At this time, the Colonel and Maria sang Edelweiss. In the song, the love for the motherland Austria is rich and profound. Regardless of the Nazi guards with guns next to them, the audience also sang Edelweiss with the colonel.
After the performance, when the awards were being presented, the colonel's family fled the performance scene under the cover of music, and the Nazis followed them all the way to the monastery. With the help of the nun, the colonel's family hid behind the tombstone, but Rove found it, missed the trail, and then drove to avoid the Nazi pursuit, but the Nazi car was unplugged by the nun and could not be pursued. Then they crossed the Alps and left Austria.