1986年9月，令人瞩目的第十届亚运会在韩国举行，人们如同庆祝节日。打破这个欢快氛围从一个渔民在木浦海边发现漂浮在水面上的断头尸的那天开始。随后法医的尸检结果出来，死者被证实是附近的极乐岛居民。警方立即成立了以警察局长为首的特别专案小组，赶赴极乐岛进行全方位的调查和搜捕。几天过去了，警方的调查一头雾水，几乎无所获。据一名居民提供的线索，调查小组在配电工宿舍和保健所附近发现了斑斑的血痕和被摧毁的无线电发射机，但血迹不属于之前发现的那位死者意味着又有新的受害者，生死未卜，案件调查进入了僵局…。

Off the southern coast of the Korean Peninsula , an island of 17 inhabitants exists. The so-called Paradise Island holds up to its name with its breath-taking mountains and sea coupled with good-natured people. No worries or stress holds for anyone who comes to visit this beautiful oasis. But this peace doesn’t last long as every single one of the inhabitants disappear one day without a single trace. Chaos initially breaks out when a blood-drenched corpse is found and everyone becomes a suspect. The furious sea allows them no boat ride to the mainland and their only existing radio communication device has been smashed. Trapped together on the island, everyone is suspicious of each other and even the unseen could be a possible suspect. As hideous secrets get revealed day by day, an island of paradise slowly turns into an island of death.