Welder Lin Chen partners with his childhood friend Liu Ruyan to run a welding and processing factory, earning a net profit of nearly two million yuan in a year, only to be allocated ten thousand yuan by her, as well as publicly humiliated and devalued. Holding the factory's core welding technology, welding team, and most customer channels, he uses this money to start his own business right next door to Liu Ruyan's factory, successively foiling the series of underhanded tricks she sets up in collusion with local industry bullies, ultimately counterattacking to become the leading figure in the province's welding industry, while Liu Ruyan ends up ruined and disgraced due to her greed and betrayal.