In the bright summer of 1963, in western Wyoming, young cowboys Jack Twistand Ennis Delmarwere both rancher Joe A. Guilemet while working. Jack is more talkative and superb riding skills. Ennis has both died of his parents since childhood, and has an introvert and widowed personality. Deep in the inaccessible Brokeback Mountain, the work of herding sheep on alpine pastures is monotonous and arduous, and there is the possibility of being attacked by wild animals at any time. The tent for Jack and Ennis was so small that only one person could sleep, and the other had to sleep by the open fire. At first, the two grazing sheep separately, and there was little communication.
Until one day, the two drank too much wine at dinner, and the night was extremely cold, so Jack and Ennis went to sleep together. Under the influence of alcohol and hormones, "something that shouldn't happen" happened between them. The emptiness and loneliness made the two 19-year-olds love each other. One person cooks, the other herds the sheep, talks by the campfire, loves in the tent, and the love between the same sex accompanied the two to spend the best summer time in their lives.
After the seasonal grazing work was over, under the pressure of the world, Jack and Ennis reluctantly embarked on their respective life journeys. With superb riding skills, Jack became a Texas cowboy, relying on his wife Lulinfamily support and the career is thriving; Ennis, who stayed on the ranch, married Alma,known since childhood , and was busy with her daughter who was waiting to be fed every day. Ordinary and bitter days.
Four years have passed in the blink of an eye, and Jack, who is suffering from lovesickness, sent Ennis a greeting card, saying that he would pass by Wyoming when he had an accident, hoping to meet him. After the reunion, Jack and Ennis kissed deeply, and the passing of time did not dilute the passionate emotions in their hearts. In the following ten years, Jack and Ennis regularly dated for fishing. The apparent marriage makes Alma's heart miserable. She knows the real reason why her husband disappears every year in Brokeback Mountain to fish with her old friend Jack, and Jack and Ennis also endure the huge prejudice and secular pressure caused by homosexuality.
In the end, the desire to stay together for a lifetime was frustrated by Jack's accidental death. After Jack's death, Ennis came to Jack's parents' farm and wanted to take Jack's ashes back to Brokeback Mountain where the two met for the first time. In Jack's room, he discovered a secret: the shirts they wore when they first met were neatly put on the same clothes hanger. This secret made Ennis burst into tears. He realized how much Jack loved him and how much he loved Jack. But no matter how strong the love is, the only witness to it is the magnificent and lush Brokeback Mountain.
