Mytyl and her brother Tyltyl are peasant children who are led on a quest for the Blue Bird of Happiness by the Queen of Light, who gives them a hat with a magic diamond that allows them to call forth the souls of all things, both living and inanimate. On their journey, they are accompanied by the human personifications of a dog, a cat, water, sugar, bread, light, fire, and the like. They visit the kingdoms of the past and future and the queendoms of night and luxury, at each place absorbing more wisdom. Eventually they discover the blue bird they've been seeking has been in their own backyard all along.
米尔德雷德（弗兰西斯·麦克多蒙德 Frances McDormand 饰）的女儿在外出时惨遭奸杀，米尔德雷德和丈夫查理（约翰·哈克斯 John Hawkes 饰）之间的婚姻因此走到了尽头，如今，她同儿子罗比（卢卡斯·赫奇斯 Lucas Hedges饰）过着相依为命的生活。一晃眼几个月过去了，案件仍然没有告破预兆，而警方似乎早已经将注意力从案子上转移了开来。 被绝望和
