桥本智子(寺岛忍 饰)是一名普普通通的家庭主妇,和丈夫浩二(平田满 饰)结婚多年,两人的婚姻早已经失去了激情,一成不变的生活令智子感到窒息,想要逃离的念头无时不刻的萦绕在她的脑海之中。一次偶然中,智子邂逅了名为菅原裕一(池松壮亮 饰)的男子,年龄差足足有15岁的两人之间产生了致命的吸引力。 虽然裕一已经有了一个正在交往的女友里美(中村映里子 饰),但是他还是身不由己的陷入了和智子的感情旋涡之中,肉体上,精神上,他们越是奋力的挣扎,就越是陷得更深。快乐是短暂的,很快,痛苦与现实的残酷就席卷而来。Yuichi seems to simply exist in a life dominated by his successful girlfriend. Out of sheer boredom, he decides to explore online dating, where he meets an older housewife named Tomoko (Shinobu TERAJIMA) also looking to escape from her daily routine. Neither are exactly unhappy with their actual partners, but their affair still brings a bit of color back to their previously monochromatic lives.