国小六年级的绫濑千早，邂逅了从福井前来的转学生绵谷新。乖巧又沉默寡言的新，竟然懂得一项出人意料的特殊技能。那就是小仓百人一首的竞技花牌。新专注抢牌的模样，震撼了千早的心。

因为千早的一句话，真岛太一和同学们一同排挤转学生绵谷新，并且打算在花牌大会上，与新一决胜负。不服输的大一，因为千早和新变亲近，而有了想要与新对抗的想法，所以在大会的过程中，偷走了新的眼镜。就算新再厉害，失去了眼镜也没办法随心所欲的抢牌，于是千早代替新上场与太一比赛花牌。

千早、太一和新前去造访了当地的花牌会“白波花牌会”，并且认识了负责人原田，以及和他们差不多年纪的木梨浩(小飘)。原田看着他们三个人与小飘等人进行花牌的三对三混合战“源平战”，察觉到千早的才华，而邀请她入会。原田告诉千早：“要把花牌当成是交到一百位朋友，与它们变成好朋友”，千早开始有了自己的梦想。

确定参加全国大会，众人为了克服各自的弱点，千早和太一决定去白波会，而肉包、小桌、小奏则是到翠北的花牌会练习。而千早也因为压力太大而感到不安，没想到却有一些出乎意料的人们也在默默的为他们加油，让她再度提起了勇气。

总集篇与四个单元剧场。

大多数的新社员都退社了，只剩花野堇和筑波秋博二人留下来。而且，堇只把精神集中在外表的打扮和太一身上。而另一方面，只知道「下句花牌」的筑波，因为规则不同，所以不断的违反规则。花牌社的二年级学生们，面对这二个很有个性的学弟妹，都觉得很伤脑筋‧‧‧。

繁华皆已过，千早因为在东京都的预赛中落败，而陷入沮丧的情绪中。母亲看到她连练习花牌都提不起劲，就带她出门去了。瑞泽高中花牌社在家人的和学校的支持下，终於为了参加全国大会，前往近江神宫。

总回顾篇

千早进入了半准决赛，比赛的对手是女王若宫诗畅。千早为了能够全力以赴，而使用受伤的右手对战‧‧‧。对於全力向她挑战的千早，诗畅心中的想法如何呢？这场毫不留情的认真对战，结果会是如何呢？

新与女王的比赛终於结束。打倒了号称最强女王的新，受到会场的瞩目，但千早却无法坦率的为他感到高兴。为什麼可以那样比花牌？在决赛中，亲眼看到新的花牌，千早内心的想法是‧‧‧

Inokuma, who won the Queen title four times in a row; Sudo, who can throw an opponent off with his words alone; Murao, the fourth seat in the Nagumo Society; and Arata, who ended the Queen's undefeated record. The Shiranami Society members are faced with four powerful opponents, but Harada's insistence brings the other three back to the mindset of playing offensive karuta. How these four matches will end is anyone's guess!

Arata wonders why he feels so relieved to learn that Taichi lost his match, even as dark memories of a similar feeling at the Yoshino Tournament come back to him, leaving him unable to concentrate fully on his match in the finals. His opponent, Murao, realizes that Arata isn't himself and sees an opportunity, but then...

Chihaya is still lost in the clouds after Arata confessed his feelings to her, making her unable to concentrate on studying for her exams. Kanade and Sumire, who happened to overhear Arata's confession, are debating whether they should tell Taichi or not. In the midst of all this, Chihaya gets a phone call from Sudo, who says someone in his college karuta club wants to play a match with her.