He was once the technical backbone of a factory, but now he has become a delivery rider, just to save his seriously ill wife's life. The burden of life weighed Wang Lei out of breath, until he accidentally discovered a shocking safety hazard hidden in the former factory during a meal delivery! On the one hand, there is a huge demand note in front of his wife's hospital bed, and on the other hand, there is the bloody revenge that may be incurred by revealing the truth. He falls into a moral and existential purgatory. Mr. Zhang's power is overwhelming, and the chain of interests of the black-hearted factory is intricate, but he will never back down! Relying on the bottom-level wisdom and unyielding dignity, Wang Lei united with the oppressed workers, used the law as a sword and the truth as a shield, and gradually tore apart the disguise of darkness. When the light of justice pierced the haze, he not only sought justice for himself and his family, but also made those evildoers who ignored life pay the price and regained the immortal dignity of an ordinary person!