The protagonist Lu Huan obtains an ancient navigation map in an accident, gathers a group of like-minded partners, and embarks on the most mysterious adventure journey in the ocean world. They experienced storms, mysterious islands, strange sea monsters and lost civilizations on the unpredictable seas, and colluded with various forces to share weal and woe. In the long adventure, everyone experiences self-doubt, breakthroughs and growth, and the disputes, misunderstandings, sacrifices and trust between each other gradually deepen. They used laughter to resolve fear, used wit to break through desperate situations, and finally revealed the ultimate secret of the sea, and also gained inner growth and the most precious friendship. The whole book has a tight pace, multiple story lines running in parallel, humor and touching elements, gradually reaching a climax and finally ending successfully.
