Zhang Chi, the former attending physician of a tertiary hospital, left the thoracic surgery department and came to the emergency center due to an accident. He partnered up with Qi Ji, an experienced emergency doctor who disagreed with his medical philosophy.Zhang Chi is overwhelmed by the work at the emergency center. He refuses to admit defeat and thinks he is professional, but various emergencies still expose his shortcomings as a “new first aider”. Qi Ji shows no mercy to Zhang Chi's lack of experience, and the twoThey became a pair of happy enemies.

They rushed around every corner of the city, rescuing patients in critical condition. While they continued to break through their physical limits and accumulate emergency rescue skills, their relationship also escalated.The two helped each other grow. Zhang Chi not only returned to the top of his career, but also gained long-lost family affection, sincere friendship and sweet love.