山田龙(山本裕典 饰)是个与周围人格格不入的不良少年,原本憧憬着一个美好高中生活的他,如今差点因成绩太差被劝退,被称为“学校第一笨蛋”的他完全无法融入这所升学名校朱咲高中。然而有一天,他与同班女生白石丽(西内玛利亚 饰)意外摔下楼梯,二人竟然因此互换了身体!在优等生白石的身体里,山田尝到了身为女生的滋味,也了解到白石不为人知的秘密。但二人面临的问题是,他们要怎样把身体换回来?他们试了一遍又一遍,才知道,原来是通过接吻来交换灵魂。很快,他们的秘密被山田的好友宫村(井出卓也 饰)发现了,宫村对此大感兴趣,要把原因查出来。这一切的背后,究竟与什么超自然力量有关…… 本片改编自日本漫画家吉河美希创作的同名漫画作品。Urara Shiraishi is a model student with excellent grades. Ryu Yamada is a trouble student. One day, Urara tumbles down the stairs with Ryu. After the accident, their bodies become switched. When they tumbled down the stairs, they happened to kiss. They guess that they may have changed bodies because of the kiss. They kiss again and they get their own bodies back. Through kissing they can change bodies freely. They also learn that there are 7 witches with special abilities and that the 7 witches can use their special abilities by kissing, so Urara and Ryu set out to find the 7 witches.