今年暑假，十岁的莉娅意识到她的朋友都变得有点怪异，他们突然对舞蹈和脸部绘画感兴趣了，他们彷佛正准备进入青春期，但自己却没跟上他们的步伐。她慢慢被同龄女生疏远，有一天，她发现了一个男孩帮派，她渴望加入其中，因为他们建造了一个很棒的木筏，还拥有一个树屋。但这个帮派的规则并不允许女生加入， 为了打破那个规则，莉娅必须通过两个非常艰难的测验。
Plot Summary:A declaration of love to childhood about a girl's struggle for her place in the boys world. Summer holidays have just begun in the small Brandenburg town of Niendorf but ten-year-old Lea is not going to the summer camp with her friends this year as usual. Lea wants to be part of the boy gang in her village, so she faces a dare. From this point, the summer seems to be full of adventures.
