The titular hero, played by Mary Elizabeth Winstead, is an assassin tasked with killing a member of the yakuza in Osaka, Japan. But when this traumatizes the man’s daughter, Ani (Miku Martineau), who was standing right next to him, Kate starts to reconsider her line of work.
Nearly a year later, she agrees to do one last job for her handler and mentor, Varrick (Woody Harrelson), but gets poisoned by a radioactive substance and now only has one day to live. Surprisingly, she discovers that this all has a connection to the previous job in Osaka. Kate begrudgingly befriends Ani in order to work her way up the ladder to find the man responsible.
There are times when Kate’s motive isn’t strong enough. With only a day to live, her revenge seems more self-serving than it does poetic justice. However, it’s her journey to discovery where she’s finally able to reclaim her life. As we see, she’s spent her entire childhood and young adult life training to be an assassin. And now, it’s all come down to this, struggling to find true freedom as her time on Earth is almost over.
If you’re savvy enough, you might be able to predict the twist not because of how the story is told, rather because of the performance of a particular actor. I won’t say who it is to preserve the reveal, but he’s miscast here. Playing his role more for acerbic comedy than as the scary menace he ought to be, this actor is not believable in his character’s fluctuation and his tell gives away the secret early on.