Off the coast of Yilan, Taiwan, there is an island called Turtle Island, so named for its turtle-like shape. The volcanic island is surrounded by patches of milky, sulfuric water known as the "milk sea." These features make Turtle Island a popular tourist spot. Leo has long dreamt of swimming in the milk sea, and his dream is about to become a reality. Over 100 years ago, Turtle Island was home to more than 700 people who made a living by fishing. Yet, they were forced to leave the island. In this episode, Leo unveils the island's little-known history.