根據作家沼田真帆香留的懸疑小說改編，劇情圍繞蒼井優扮演自甘墮落的女子北原十和子，與阿部貞夫飾演無錢無地位的渣男同居之餘，搭上松坂桃李飾演的有婦之夫並發展親密關係，同時又與竹野內豐飾演的舊愛藕斷絲連，關係七國咁亂。一天突然聽說前男友失蹤的消息，她的生活開始發生微妙變化。儘管女主角已經不再發夢擁有愛情，卻仍然與不同男性發生關係，陷入單戀、同居、出軌大搞不倫戀，念念不忘只是一場究極之愛！蒼井優一人單挑三男，愛與慾望交織，在絕望中爆發冷酷與精湛演技。以《凶惡》贏得多個獎項的導演白石和彌，用極端撩亂的故事詮釋愛的多種畸態。

Towako has no love for blue-collar worker Jinji, but she lives with him for his money and the care he provides. Meanwhile, she’s in an affair with Mizushima and pining for her ex-boyfriend, Kurosaki, who nearly beat her to death eight years earlier. When she learns that Kurosaki has been missing for five years, Towako suspects that Jinji may have played a role in his disappearance. Based on the mystery novel by Numata Mahokaru, Birds Without Names is a riveting tale of devotion and desire anchored by a fearless performance by Aoi. Playing a woman driven purely by selfinterest, Aoi gives one of her most captivating performances of her career in this emotional and morally ambiguous genre-bender.