For many years, people thought that the Mariana Trench was the deepest place in the ocean. But in 2035, oceanographers found somewhere deeper. They called it the "Therne". Today, a young scientist will make the world's first dive to the bottom of that trench. What will she discover - in the trench, or otherwise? [Now a part of WEBTOON's official BRAIN Anthology: https://www.webtoons.com/en/horror/brain-anthology/seven-miles-down-ep-1-the-unknown/viewer?title_no=2207&episode_no=75]