Ding Zilong, Mei Yuan, Jiang Erbao, Cheng Peng, Zhang Zhigang, and Liao Jun joined the army for different reasons and became firefighters. They grew up in the test of blood and fire again and again. They participated in the rescue work of dealing with dangerous chemical leaks, road traffic accidents, building collapses, major production safety accidents, mass distress incidents, and public health emergencies. Where there is danger, there are their figures. Unfortunately, a firecracker factory exploded, and Zhang Zhigang died heroically during the emergency rescue. Facing his friends who joined the army together, Liao Jun couldn't stand the blow of life and death in front of him and retired early. Ding Zilong, Mei Yuan, Jiang Erbao, and Cheng Peng wiped their tears in the song of "Sending Comrades in Arms", completing the transformation from rookies to firefighters and becoming the cutest firefighters in the new era.