该剧讲述木皿花枝之前是日本空手道的代表，却不想梦想被破灭，进入人生的低谷。然而从未谈过恋爱的花枝一直专注空手道，在比赛之前听到著名作者芦田春树创作的胜负曲，现在的芦田这一位落魄的音乐人，音乐道路上不顺，也差点丢了工作。这两个人在一次意外的机会中开始挑战虽然是谎言但认真恋爱。然而身为花枝的青梅竹马夏川慎吾从小爱慕花枝，因为看到芦田与花枝的关系越来越亲密，慎吾内心产生焦虑，从而意外加入其中，形成三角恋的关系。花枝内心也对着恋爱非常渴望，抱着谁都不能说的秘密，开始谈一场人生最后的恋爱。芦田原本就是一位创作歌曲的音乐怪人，因为自己写不出让观众们所懂的音乐，使事业碰到瓶颈，两个月之后如果再写不出好的歌曲要遭受解约的风险，最终与花枝谈一场契约的恋爱

The play tells the story of Hanae Kisara, who was a representative of Japanese karate before, but she didn't want her dreams to be shattered and she entered the trough of life. However, Huazhi, who has never been in love, has been focusing on karate. Before the competition, she heard the winning song composed by the famous author Haruki Ashida. Now Ashida, a down-and-out musician, has a difficult music career and almost lost his job. . The two began to challenge a lie but a serious love in an unexpected opportunity. However, as Huazhi's childhood sweetheart Natsukawa Shingo, she has been in love with Huazhi since she was a child. Seeing that the relationship between Ashida and Huazhi is getting closer and closer, Shenwu feels anxious in his heart, so he accidentally joins it, forming a love triangle relationship. Huazhi is also very longing for love in her heart, and holding a secret that no one can tell, she begins to talk about the last love in her life. Ashida was originally a music geek who composed songs. Because he couldn't write music that the audience could understand, his career hit a bottleneck. If he couldn't write a good song after two months, he would suffer the risk of termination of the contract. Talk about a contractual love