Zhai Chen, a seemingly weak kindergarten teacher, possesses special abilities. Once he inhales oxygen, he becomes extremely powerful. He works part-time as a personal bodyguard in order to support his family, but he is caught in a mysterious murder case. Che, was recognized by the other party at a glance, let's see how the two join forces to fight against the enemy hidden in the dark. The author uses light-hearted brushstrokes to narrate social cases that are not easy, and gradually reveal the life experience and past of the two protagonists. Each What is happening now is caused by the cause and effect of the past, and the stories are intertwined. In the real social events in the world, look for the brilliance of human nature and the kindness and loveliness.