The two sisters were accidentally trapped in a shark observation cage on the bottom of the sea while on vacation in Mexico.The oxygen is gradually running out, and several ferocious great white sharks are swimming nearby.Less than an hour of air left for them - in this line of life and death, they must race against time to find a way to return to the sea. The polished version enhances the tension of the situation and the emotional tension of the characters, and enhances the sense of picture and substitution through detailed description.If you want to further highlight the emotional interaction between sisters or shape characters with a specific personality, you can also provide more information, I can continue to optimize the copywriting.