Lei Yu (Wang Yibo) and other outstanding pilots have been rigorously selected to become test pilots. Under the leadership of captain Zhang Ting (Hu Jun), they participated in the test flight of the latest fighter jets. At high altitude, the engine suddenly stopped or even caught fire, and the plane lost control... They fought with death again and again, just to obtain the most extreme data. As the delivery date of the fighter jets approaches, the difficulty of the mission gradually increases. Can they return triumphantly...