Veteran welder Shen Tiejun was framed and had his skills stolen by Zhang Dong and his son in his past life, ending up destitute and dying. Reborn back to 2018, facing false operation accusations and suspension humiliation, he responds calmly. After being demoted to the scrap yard, he uses abandoned equipment to hone his skills through hardship, and ultimately proves his innocence with a flawless performance in the national aerospace welding mission, taking back his honor, bringing the enemies to justice, and guarding his family and dignity.