In the near future the earth has become desolate and dangerous. Now inhabited by by a mysterious race of creatures, humanity has been forced to find refuge in the SkyArk, a man-made city in the sky. As the population grows, space becomes scarce and only the rich and powerful can stay, dumping the poor and orphaned of SkyArk to the abandoned earth.

影片讲述了弟弟小崇（黄远饰）为挑战哥哥阿轩（王大陆饰）而踏上跑步之路，中途机缘巧合认识田径部高冷学姐以晴，小崇以晴找到新的奔跑目标，在亲情和爱情的双重激励下勇敢追逐梦想的热血故事。