In traffic jams on his daily commute, "she" in the next car is Li Mo's only solace in his boring life. It wasn't until the 91st day that he witnessed her being held hostage by a man in black, mouthing "Save me" to him, and then disappeared into the traffic. From a safe "bystander" to a guilty "witness", an ordinary office worker accustomed to the indifference of the city is forced to pursue the truth alone. He will fight against a dark organization that can easily crush him, and regain his forgotten courage at the cost of completely losing his stable life.
