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In a city of love and prosperity, a city of lost hope and premature death, veteran detective Hei feels it all: the hurt, the helplessness, the horror. When his father-in-law, the billionaire benefactor Kim, is gruesomely murdered in his palatial mansion, he enlists the assistance of his former partner turned private detective.
Zhang Xiaohong, a struggling coach, leads Wang Cai and a group of Wa ethnic boys from Yunnan through various hardships. Together, they demonstrate that there are no class distinctions in tennis. In their pursuit of the national championship, they leave their mountainous village and learn to overcome challenges along the way.
