从路易斯安那州的湿地池塘到印度加尔各答的贫民窟，影片带我们搜寻一个答案“到底是什么让人们感觉幸福”。通过世界各地一部分真人的亲身经历经验描述到与哲学界科学家专家学者的访谈。这部影片把人类情感中最关键重要的"幸福"剖析无遗。 HAPPY takes us on a journey from the swamps of Louisiana to the slums of Kolkata in search of what really makes people happy. Combining real life stories of people from around the world and powerful interviews with the leading scientists in happiness research, HAPPY explores the secrets behind our most valued emotion.