Introduction: Yang Xiaolong, who works in a cafe, came to the beach for the first time, excitedly went into the water to play, but was stung by a highly poisonous creature, the blue-ringed octopus. He never expected that Yang Xiaolong's consciousness could be attached to the octopus because of a blessing in disguise. Since then, the seabed has no secrets for him, and sea fishing, treasure hunting, and adventure have become his daily life.