Complex sentence: In the film, a Chinese former police officer is arriving to the US in order to avenge his brother's death, while he also falls in love with a rival mobster's beautiful daughter and struggling together against both the Chinese and both the American mobs.
Split into simpler sentences: In the film, a Chinese former police officer is arriving to the United States in order to avenge his brother's death. He also falls in love with a rival mobster's beautiful daughter and they are struggling together against both the Chinese and the American mobs.