故事发生在氛围轻松制度宽松的七森中学，为了打发无聊的课后时光，个性天真单纯的少女赤座灯里（三上枝织 配音）伙同童年好友岁纳京子（大坪由佳 配音）与船见结衣（津田美波 配音），利用荒废已久的茶道社组成了一个名为“娱乐部”的活动社团。
Video artist Ryosuke visits the suburb of Furano in Hokkaido, tuikan.cc where his friend lives, in order to shoot a video. His car breaks down and Ryosuke decides to walk to a house and ask for a phone. The person that opens the door is his former girlfriend and first love Haruka. They meet for the first time in 23 years. Even though Ryosuke knows that she is married, he takes her to his video shooting and they get close. Ryosuke leaves Hokkaido in 2 days and he asks Haruka to spend one more day with him.
赌博的绝对规则是，在一场决定性的战斗之后，会有赢家和输家。胜利者获得财富和荣誉，而失败者则被打上了落后者的烙印，品味大打折扣。在决定胜利之前的沉默中，本能被激发，欲望达到恍惚状态。在资本主义社会，这是生活的残酷缩影。
