功夫少年李峰（王班 饰）初入纽约，因帮朋友解围反遭当地空手道冠军“美式霸凌”，便决心参加空手道大赛赢回尊重。昔日恩师韩师傅（成龙 饰）远渡重洋携空手道大师丹尼尔（拉尔夫·马基奥 饰）出手相助，将纽约化成训练场对李峰开启宗师特训。在师傅们的教导下，李峰能否将两个武术流派融会贯通，用胜利赢得尊重并开辟属于自己的武学之道？
Yujeong, who works as a night shift nurse at a general hospital's cardiology department, is now told that her 12th-grade younger sister, Kijeong, has been arrested by the police as a suspect in an infant abandonment case. Only then does Yujeong start to make desperate efforts to rescue her sister.
