During a salvage operation, others offer 20,000 yuan, but Zhou Yanshan insists on sticking to the originally agreed price of 15,000 yuan. His fellow workers don't understand, and the brotherly bonds begin to fracture. Facing one challenge after another, he nevertheless refuses to compromise on safety. Some people work tirelessly to make a living, while others keep watch to ensure everyone's safety. Below ground lies the mud; above ground lies the concern of loved ones. No matter how rough the road ahead may be, every hardworking person deserves to return home safely. However deep the muddy well may be, daylight will eventually reach it. Only by staying true to one's original principles can the way home be illuminated.