Intern Shen Yan adheres to professional bottom lines, refuses to sign a false safety report, and faces the supply chain corruption problem hidden within the enterprise. The story is full of positive energy. Facing crisis, everyone does not blindly confront, but respects objective evidence. Once strong Gu Yan faces her own faults and bows to reform. Gu Hai takes the initiative to take responsibility for management oversight. Everyone works together to complete equipment recall, repair system loopholes, and break position prejudice. Finally, everyone sets up a public product safety laboratory, adheres to the initial intention of safety first, interprets the responsibility and commitment of engineers, and conveys the precious spirit of admitting mistakes and correcting them, and showing awe for life and rules.