On the day before Prince Siegfried's 20th birthday, his mother told him that he would choose a princess at the coming-of-age celebration the next day. After discovering that the prince was not too hot, his friend Banno suggested going out hunting for fun at night. Then a group of people came to Swan Lake to hunt a group of white swans. Siegfried took a fancy to a swan with a crown. When he tried to shoot it with an arrow, he saw that the swan had become a beautiful girl. She calls herself Princess Aogueta. Because she refused to marry the devil, she was retaliated by the devil and became a swan. Only at night can she regain her human form. The prince fell in love with Ogetta when she told her story, and vowed to announce her engagement to Ogetta at the adult celebration the next day, in order to break the devil's magic and restore the princess's identity. Unexpectedly, all this was seen by the devil, and the next day he suddenly appeared with his daughter, the black swan Oglia. The prince, who had no intention of choosing a concubine, only remembered his promise to Ogle Tower. Under the temptation of the devil, he made a sincere promise to Ogle Tower in the form of Ogle Tower and announced his engagement. And the real Aogueta, as a swan, has been watching from the window. She flew away with a groan. After the devil succeeded, he laughed and walked away. After knowing that he had been cheated, the prince chased him to the lake with a sword, knelt in front of Ojeta and apologized for his stupidity, once again expressing his love for Ojeta. After a fierce battle, the prince succeeded in killing the devil.
The story is divided into two endings here. At the end of the comedy, the undying love of two people finally touched God, and the princess and the girls were restored. Since then, the princess and the prince have been together for a hundred years. In the tragic version of the ending, because the prince made a wrong engagement, Ojeta never missed the opportunity to contact the curse again, and they threw themselves into the lake for double suicide.