Kenji (Masahiro Matsuoka) used to be the leader of a motorcycle gang, but became a girl’s comic artist after losing his parents due to a sudden accident at 19. He risks his life to defend his younger sister, Yasuko (Mikako Tabe), and pokes his nose into everything about her. They are constantly fighting because Yasuko, a high school student, is totally fed up with Kenji who is an excessive interference like a father.

Erika (Ryoko Hirosue) used to be a leader of a women’s motorcycle gangs and she, now manages a flower shop. Her super-good-looking younger brother Jun (Tadayoshi Okura) is a high school student. Erika still has feelings for Kenji as in the past, but when she meets him, she says hurtful words to him, which are opposite from her true feelings. On the other hand, Yasuko falls in love with good looking Jun at first sight.

What is in store in the future for Erika who cannot be honest about her straightforward but awkward feelings of love toward Kenji? How will Yasuko and Jun’s first love result? This is a family comedy that shows heart-warming brother and sister relationships, and the strength of bonds between family, while following the love stories of two couples !

健儿（松冈昌宏 饰演 ）是前暴走族总长，为养育妹妹康子（多部未华子 饰演），成为了少女漫画家。拥有着「守护妹妹是我的正义！」的信念的健儿，在生活上的每个细节也干涉康子， 使两人每天都会为了小事情而争吵不休。

花店店长惠梨香（广末凉子 饰演），她年少时也曾是暴走族。她正是刚转校来的椿纯（大仓忠义 饰演）的姐姐。惠梨香在年少时，已认识健儿而且对他存有好感。多年後的現在，兩人再次相遇，惠梨香知道自己对健儿的感情並沒有改変。可是每次见面，惠梨香总是对健儿说出与內心相反的话。

另一方面,，康子在上学的途中遇上了椿纯（大仓忠义 饰演）， 且对他一见钟情。

到底健儿和惠梨香, 康子和椿纯的感情会如何的發展呢？

这是一出描写兄妹,，姐弟与家族的愛、笑与泪融和的亲情爱情喜剧。