Inseparable best friends struggle to make the best of their last few days together, savoring the city nightlife with an enigmatic artis t one of them

　　特工莎莉比格斯有一个秘密，她可以随时随地回溯几秒钟的时间，这个特异功能让她在FBI中有着举足轻重的地位。但是她的内心深处，她十分害怕这种特异功能带来的痛苦……