1942. Following the invasion of China, the Japanese forces have succeeded in controlling the country’s coastline, as well as large parts of the land itself — giving the Japanese Navy command of the surrounding ocean. To make matters worse, the foreign invader has overrun Burma, cutting off the last significant land routes supplying the struggling armies of Chiang Kai-shek. Facing total annihilation, the Chinese army has one final solution: To fly over… The Hump. Air Force Commander Zhou Zhirou is tasked with personally training a crew of pilots, including maverick Zhao Wenkuan, to fly over this notoriously dangerous stretch of the Himalayan mountains. The young men compete with the harsh climate, the changing airflow, the rocky terrain, and the superior technology of the enemy in their bid for victory. Many of them will not live to tell the tale, but their bravery will change the course of the Second World War.