平凡的婚姻，可爱的姑娘，无忧无虑的过日子的村主塔子(夏帆 饰)。某天与相别十年的前男友鞍田秋彦（妻夫木聪 饰）重逢。像恶魔一样进入塔子的心灵缝隙中的鞍田，将她的命运带往意想不到的方向。

After the death of their estranged father, 3 adult sisters invite their teenaged half-sister to live with them.