After a rigorous selection, Lei Yu and other outstanding pilots officially become test pilots. Led by Commander Zhang, they are tasked with testing the latest fighter jets. As they soar to new heights, the engine suddenly fails and catches fire, causing the aircraft to spiral out of control. Over and over again, they face death, only to persevere and gather crucial data under extreme circumstances. With the delivery date of the fighter jet approaching, their challenges become increasingly difficult, will they be able to triumph?