After being slain by a group of criminals, a man is reborn with animal-like superpowers and makes it his mission to right the wrongs of his city.

55岁的美国华裔移民秀莲（杨紫琼饰）家庭事业两崩溃。在老爸爸生日大寿这天，除了要阻止女儿（许玮伦饰）暴走出柜、替无用丈夫（关继威饰）擦屁股，还得去税务局向古板大婶（杰米·李·柯蒂斯饰）解释不太妙的税务问题。才踏进大楼电梯，…