While inspecting a cargo ship, Lin Guodong, captain of the Donglan Port diving team, refuses to resume work despite the shipowner offering an additional 200,000 yuan for expedited repairs, because the critical isolation confirmation has not been completed. His competitor, Ma Sanqiang, seizes the opportunity to poach his workers with high salaries. His senior apprentice, Liu Zhigang, struggling to make ends meet, takes five key team members and defects, leaving the team on the verge of collapse. Bearing the pain, Lin Guodong sells his car to pay the workers and rebuilds his team by starting with small projects. Ma Sanqiang wins contracts with low bids but secretly removes safety measures and falsifies risk reports. When diver Zhou Xiaobei goes missing after an underwater accident, Liu Zhigang finally realizes his mistake and tearfully begs for help. Lin Guodong arrives with the necessary documentation and assists in a professional rescue, bringing Zhou Xiaobei back alive. Afterwards, Ma Sanqiang is held accountable, and Liu Zhigang remorsefully asks to return. The master and apprentice reconcile, understanding better than ever that a ship can always be repaired later.