13岁的吉娜(珍妮弗·加纳 Jennifer Garner饰)充满对大人世界的憧憬。她渴望散发媚惑的女人味，和梦中情人那样约会，得到男孩们的青睐。但这一切都只是她的白日梦，事实上吉娜在异性男孩中间似乎没什么吸引力，并被朋友捉弄了一番。跟邻家哥哥马特（马克·鲁弗洛 Mark Ruffalo饰）大闹一场之后，吉娜已经完全厌恶了这乏味的童年，她要赶快长大成人！ 
　　想不到，吉娜梦想成真了。她竟在第二天变成了一个30岁的熟女，有体面的工作和优厚的收入，人生翻开了春风得意的新篇章。虽然吉娜一头雾水，却也开始投入这上帝赐予的幸福生活。然而，步入了大人世界的吉娜真的获得了她梦寐以求的东西么？30岁的她理所当然要面对成人复杂的世界，这让她怅然若失；更不妙的是，她心爱的男孩马特，此时要成为别人的丈夫了。失去了童年和白马王子的吉娜，开始乾坤大逆转，她要找回丢失了的东西…

Jenna: I don't know what Lucy said to you about me but I want you to know that whoever that was she was talking about wasn't me.
Matt: It doesn ' t matrter what Lucy said, I stopped trusting her after she stole my Pop Rocks in the third grade.
Jenna: Matt, l am not the awful person that l know that I was. I don't even know that person. And l'd ljke to believe, I have to believe that if you knew that, if in your heart, you really, really knew that, you wouldn't be getting ready to marry someone now, unless that someone were me.
Matt: Jenna, l'm not gonna lie to you. I have felt things these past few weeks, that I didn't know I could feel anymore. But I have realized in these past few days you can't just turn back time.
Jenna: Why not ?
Matt: I moved on. You moved on. We've gone down different paths for so long. We made choices. I chose Wendy. That's her family down there. We care about each other, you knew You don't always get the dream house, but you get awfully close. Please don 't cry, Jenna.
Jenna: Oh, l'II be fine, I promise. ( Matt takes the dream house down from the ctoset. ) MattY, can I have it ? Please ?
Matt: You're not gonna whip it at me ?
Jenna: No. Look, I won't have you late. Just go. Go on. l'm fine. I'm just crying because l' m happy. I want you to be so~ so happy. love you, Matt. You are my best friend.
Matt: Jenna. l, l've always loved you.


珍娜：我不知道露西跟你说了我什么，但我想让你知道，无论她说的是谁，都不是我。
马特：露西说了什么都无关紧要，她三年级偷了我的流行摇滚唱片后，我就不再信任她了。
珍娜：马特，我并不是原来那种可怕的人，我甚至不认识那个人。我愿意相信，我不得不相信，如果你知道，如果在你心中，你确确实实知道，那你现在就不准备去娶别人了，除非新娘是我。
马特：珍娜，我不想对你撒谎。我在过去这几个星期里已经感觉到了，我原以为自己不会再有这种感觉了呢。但我在过去这几天里意识到你根本无法让时光倒流。
珍娜：为什么不能？
马特：我向前走， 你也向前走，我们已经分道扬镳了很久。我们已经做出了选择，我选择了温迪，她的家人就在楼下。你知道我们相互关心吗？你并不总是拥有梦幻小屋，但你非常接近。请别哭，珍娜。
珍娜：噢，我没事儿，我保证。（马特从壁橱上取下梦幻小屋。）马蒂，能给我吗？求你了！
马特：你不会用它抽打我吧？
珍娜：不会，听着，我不会耽误你。请走吧，走吧，我没事儿。我只是喜极而泣。我想让你也开开心心，我爱你，马特。你是我最好的朋友。
马特：珍娜，我，我永远爱你。