Fisherman Lin Feng encounters a superstorm while out at sea and uses his extraordinary ship-handling skills to rescue his uncle and his uncle's son. To raise money for his father's surgery, he agrees to venture into dangerous waters to catch crabs. However, after the job is done, his uncle's family betrays him and withholds his wages. As his father passes away, he leaves his son Lin Feng his wife's old nautical journal. Taking an old boat, Lin Feng bravely ventures into the forbidden depths of the sea. Guided by the nautical journal, he discovers precious treasures hidden in the deep ocean, turns his fortunes around, and amasses a fortune. He builds his own fleet and establishes himself, while his ungrateful uncle and cousin eventually suffer the consequences of their betrayal.