Taeyeon won the cruise for 3 days/2nights after entering a drawing contest. At the same time the 9 girls are on the cruise,due to the bad stormy night,the boat sank. Somehow,Taeyeon managed to save the other girls with a boat that was from the ship. The weather condition gets worst as the 9 girls were swept away. The next day,Taeyeon found herself safe in an island. She was never alone. Jessica woke up with amnesia due to the disaster. Taeyeon noticed that the other 7 girls were missing. The other girls got split up into groups at the same island where TaengSic was. YulTi,YoonHyun and SooHyoSun ends up in a different parts of the island. Taeyeon has to deal with Jessica's amnesia and reuniting the other girls. Can they get out of the island?