电子游戏策划美琪（莫小棋 饰）最近与男友郑明（胡兵 饰）的感情出现了危机，她对工作心不在焉并怀疑遭到了男友的跟踪。在上司的建议下，美琪与郑明、以及好友阿森和yoyo前往海岛度假。他们在船老大的引导下，来到一处荒僻小岛，入住了由林叔（王双宝 饰）与其智障儿子阿邦打理的旅馆。旅馆由烂尾楼改建而成，满墙涂鸦与铁丝网封闭的窗户别有一番风情，虽然小岛荒僻，连手机都失去了信号，但阿森与yoyo很快被海岛风景所吸引，而美琪和郑明怀揣心事，难展笑颜。待人热情的林叔父子招待阿森与yoyo，席间居然用药物将两名客人制服，美琪与郑明察觉后试图逃走，海岛游顿时变成了一场猎杀游戏……

Beijing, the present day. Stressed out over whether to dump her three-year boyfriend Zheng Ming in favour of Peter, a western businessman, video-game designer Meiqi finds her private life is affecting her work. She also suspects that Zheng Ming is now stalking her, and is the masked attacker who almost killed her one night in an underground carpark. So she can finally sort out her feelings, her boss Laura arranges a holiday for her in a tropical archipelago, along with Zheng Ming, her work colleague YoYo and YoYo's boyfriend, Sen.