Danieland Susanare an American couple who came to the Bahamas for vacation. On weekdays, they both maintain a tense working style, which makes their relationship increasingly alienated. , They hope to use this trip to let the two people regain their former feelings and regain their former intimacy. They arranged a deep-sea dive for this trip, which was the long-awaited adventure for the two. Together with other passengers, they carried the cruise ship to the deep-sea diving site, and the diving activity began. After 40 minutes, the people who completed the diving trip returned to the boat one after another, and the cruise crew left the boat carelessly. When Daniel and Susan came out of the sea, they found themselves left alone in the vast ocean.
Gradually, Daniel and Susan discovered how dangerous their situation is. In the vast ocean, the refreshing light green is just its blinding coat, and its deep hinterland contains huge black power, giving birth to the reproduction of fear. Except for the cold, hunger, and staying away from the island, the place where they are is is the sea area where sharks frequent. In front of nature, human beings appear small and vulnerable. A well-planned and warm ocean journey has evolved into a journey of suffering that will be unforgettable for them
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