Neon lights flicker across the city late at night, concealing countless joys and sorrows unknown to the world. Lin Shen, an unemployed young man, unexpectedly binds himself to an emotion-collecting System and becomes a night-shift taxi driver. He cruises through the city's streets and alleys, picking up passengers, each carrying their own troubles. Joy, grief, anger, relief, despair, warmth... Every intense emotion can be converted by the System into energy and exchanged for wealth, skills, opportunities, and even a chance to turn one's life around.
He has driven a girl sobbing over a breakup, met a businessman buried in debt, encountered a craftsman steadfast in his ideals, and dealt with unreasonable troublemakers. As he gathers emotions along the way, he resolves conflicts and uses the abilities granted by the System to overcome hardship, bring warmth to others, and gradually climb out of life's lowest point. In the cold depths of the city at night, he is both a witness to its joys and sorrows and a dreamer seeking his own redemption. He measures the city's warmth and cold through the wheels of his taxi, and uses emotions to rewrite an ordinary fate.
