The drama is based on a novel by Sato Shogo called ‘Minoue Banashi‘. Its story revolves around a bookstore clerk named Michiru who unexpectedly wins the 200,000,000 Yen (2.5 million USD) lottery. Consequently, she starts to get involved in unpredicted betrayals and murder.

理加（原田知世饰）与健吾（渡部笃郎饰）是一对同居四年的情侣，在理加完全无预警的情况下，健吾却深深爱上另一个女孩华子（菅野美穗饰）疑情的理加原本只想守著两人同居的房子等待健吾回头，怎奈热情奔放的华子却硬是闯入理加的生活圈，刚开始理加对这个与自己截然不同的情敌完全没有好感，可是不知不觉中却渐渐对她产生关心，难解的三角关系会如何找到出口？