Steel fixator Shi Lei lives frugally for four years, funding his childhood sweetheart Su Qing to finish her studies. Unexpectedly, Su Qing steals the engineering blueprints he painstakingly drew to claim credit under her name, and betrays their relationship to cling to a wealthy family. Facing false accusations and framing, Shi Lei relies on complete evidence to hold fast to his original intentions, restoring the truth with the company's support. Relying on his superb skills, he achieves self-growth, guards the bottom line of kindness, and interprets that down-to-earth struggle is the solid foundation of life.