Gu Canghai lives in poverty with a broken boat and his ailing wife, while creditors come knocking. During one fishing trip, he unexpectedly discovers a mysterious opportunity that turns his fate around. Facing schemes from close relatives, harassment from villagers, and undercurrents in the business world, he protects his family with kindness and ventures forward with courage. By heading south to trade goods and investing in seafood, he eventually builds a successful business of his own, allowing the light of kindness to shine on even more people.