Won Mi Ho is the only daughter of her father who runs Daehan Group. Her arrogant and selfish attitude causes her to make a big mistake that eventually angers her father into banishing her to Jeju island. There, she is assigned to work as a high school ethics teacher. Unbeknownst to her, the island is where evil roams free. She meets other individuals on the island and together, the characters join forces to live. Adapted from the webtoon "Island" (아일랜드) written by Yoon In Wan (윤인완) and illustrated by Yang Kyung Il (양경일).