Returning home, youth Zhou Yu unexpectedly obtains a miraculous bead, able to understand the language of ocean spirits. His family's seaside fish raft is the first to welcome an injured, pregnant killer whale, and cute white dolphins also arrive upon hearing the news to seek refuge. Since then, various rare sea beasts gather successively at the fish raft, and the peaceful fishing ground instantly turns into a natural ocean paradise. While guarding this group of cute partners and getting rich steadily through delicious seafood, Zhou Yu also joins hands with the maritime police to clean up chaos in the sea area, gradually uncovering the long-dusty mysterious secrets of the bead and the deep sea.