[People always struggle with the sad mood of "Melancholy Sunday", which turns out to be related to a complex and poignant love story.In a restaurant in Budapest, the capital of Hungary in the 1930s, the beautiful Ilona (played by Erika Marozsán) was deeply loved by two men at the same time.One is the restaurant owner and the other is the pianist.Neither of the three people is willing to change the current situation and break the balance. Ilona feels very peaceful and happy with the love of two men at the same time.The pianist created "Melancholy Sunday" for her, and he and the restaurant became famous in one fell swoop.However, Hans' appearance completely destroyed all this.He was once an unknown boy. While he was deeply fascinated by "Melancholy Sunday", he also became the minister of Ilona's skirt.Hans proposed to Ilona, but was rejected. He was now an officer full of hatred and was glorious. He was coming to Ilona with his long-planned revenge plan and gave their lives a fatal blow.The story of love, revenge and war is struck by tangled in Budapest.]