On his 50th birthday, Victor Chandler, a National Technical Expert, leaves home in anger after his daughter-in-law throws away his plate of crayfish and his son treats him coldly. With his superb craftsmanship, he revives the nearly bankrupt Skyworks Machinery Factory, rising from a maintenance worker to chief engineer, and exposes the snobbery of his son and daughter-in-law at an Investment Fair. His mother-in-law Fiona Lloyd seeks revenge for her daughter by spreading rumors, suppressing his business, stealing blueprints, and rushing to patent his designs. Victor reunites with his old German acquaintance Hans, secures technical investment, and successfully develops a five-axis machine tool. His son Jake Chandler gets divorced and joins the factory to learn skills, while his daughter-in-law Mia Yates awakens after experiencing unemployment, her son Noah Chandler's illness, and manipulation by her mother, and finally testifies in court. The patent lawsuit ends in victory, Victor is awarded the title of model worker, and the whole family reconciles over a crayfish feast, ushering in a happy reunion.
