发生在墨西哥、关于爱和认同的四个故事：11岁的小男孩想要表达对表哥的好感，哪怕这意味着受伤；声望卓著的祖父在浴室中对男妓追逐爱慕，恨不得补回失去的时光；一对童年好友久别重逢，情不自禁的爱上后却害怕曝光；一份安稳的感情关系开始面对七年之痒，哪怕他们依然深爱对方...... 当它们交织在一起，就是“四个月亮”。Four stories about love and self-acceptance: An eleven year-old boy struggles to keep secret the attraction he feels towards his male cousin. Two former childhood friends reunite and start a relationship that gets complicated due to one of them's fear of getting caught. A gay long lasting relationship is in jeopardy when a third man comes along. An old family man is obsessed with a young male prostitute and tries to raise the money to afford the experience.