一场开学典礼汇聚了单亲家庭的冰（塔塔·杨 Tata Young 饰）、富裕家庭的本（查克利·彦纳姆 Shahkrit Yamnarm 饰）、文艺青年阿德（雷·麦克唐纳 Ray MacDonald 饰），以及富家小姐枫和爱好写诗的丛璞，5人在献血活动中得知了大家都是O型血，因此结成了“O型血”小组开始了大学四年丰富多彩的生活。一次意外使得本与冰走到了一起，可是阿德也一直注视着冰，而枫更毫不掩饰对本的爱慕。毕业前夕阿德因为吃醋引发冲突被学校开除去了美国，丛璞爱上了一个成熟男子。在枫坚持不懈的勾引之下，本终于把持不住与枫发生了关系，而冰刚好撞破了这一幕，好好的5人组面临着分裂。冰心灰意冷地决定离开泰国，正当她快离开的时候知道了枫急需输血生命垂危的消息，而她的血型正还是枫急需的阴性O型血……几年之后本终于把戒指套在了枫的手上，丛璞事业有成，而成为摄影师的阿德带回来冰的消息……

Chalinee, a young reporter, is curious as to the truth behind the three mysterious cases, so she starts searching for more information. Finally, she discovers the house where three women were killed by their lovers. But when she takes her final steps into the cursed house, she finds something more frightening than she ever imagined waiting for her.