电影《闯天下》讲述了一个关于杂技的故事，以赵家人为主线，讲述了他们经历的苦难、困境和坚定的信念。

赵家人是杂技世家，为长乐班赢得九月庙会金狮奖后，获得了大宗商演合同，但要求必须有赵家的获奖节目。在军阀侯督军的迫使下，赵家人只好留在长乐班，但班主何自雄的妻子白牡丹却暗中与军阀勾结，将当家女把式萧紫霞献给侯督军，让赵家因没了把式而无法自立门户。赵家人因此逃到南洋卖艺发展，并成立了自己的班子——华夏班。多年后，华夏班回到天津，与旧班主何自雄在争剧院、争名望等事上又结新怨。鬼难拿暗中下黑手，打伤了赵天福，导致赵家人的命运再度陷入困境。赵天福临终前将班子交给燕青山，令赵沧海感到不信任。赵沧海离开华夏班，创建了自己的神奇小子班，并与华夏班、长乐班展开了生死对决，最终为华夏班赢得了金狮奖。为了寻找当年的杀父仇人，赵沧海、燕青山等人一同前往天津，却陷入了何自雄与鬼难拿的设计中。

这部电影充满了人情味和家国情怀，让观众看到了传统杂技文化的魅力和不屈不挠的精神。它也向观众展现了一个家族的传承和坚韧不拔的奋斗，让人感受到了家国情怀的真正内涵。

The movie "Crossing the World" tells a story about acrobatics, taking the Zhao family as the main line, telling about the hardships, difficulties and firm beliefs they have experienced .

The Zhao family is a family of acrobats. After winning the Golden Lion Award at the September Temple Fair for the Changle Class, they won a large commercial performance contract, but they are required to Must have Zhao's award-winning show. Forced by the warlord Hou Dujun, the Zhao family had no choice but to stay in the Changle class, but Bai Mudan, the wife of the class leader He Zixiong, secretly colluded with the warlord and dedicated Xiao Zixia, the daughter of the family, to Hou Dujun, making the Zhao family helpless because they lost the style. Stand on your own. As a result, the Zhao family fled to Nanyang to develop as a performer, and established their own team——Huaxia Class. Many years later, the Huaxia troupe returned to Tianjin, and formed new grievances with the old troupe leader He Zixiong in matters such as fighting for the theater and fame. Gui Nanna secretly played a black hand and injured Zhao Tianfu, causing the fate of the Zhao family to be in trouble again. Before Zhao Tianfu died, he handed over the team to Yan Qingshan, which made Zhao Canghai feel distrustful. Zhao Canghai left Huaxia Class to create his own magical boy class, and fought a life-and-death confrontation with Huaxia Class and Changle Class, and finally won the Golden Lion Award for Huaxia Class. Zhao Canghai, Yan Qingshan and others went to Tianjin to find the enemy who killed their father back then, but they fell into the plan of He Zixiong and Gui Nanna.

The film is full of human touch and family and country feelings, allowing the audience to see the charm and indomitable spirit of traditional acrobatic culture. It also shows the audience the inheritance and indomitable struggle of a family, which makes people feel the true connotation of family and country feelings.