一次偶然中,比莉(珍娜·艾夫曼 Jenna Elfman 饰)结识了名叫扎克(乔恩·福斯特 Jon Foster 饰)的男子,虽然扎克比比莉年纪要小,但两人还是十分投缘。一夜激情过后,比莉惊讶的发现自己竟然怀孕了,反复思量之下,她决定把孩子生下来。 扎克住进了比莉的公寓,但比莉反复强调,他们只不过是纯洁的室友关系,很显然,她并不想和这个不靠谱的年轻人“更进一步”。对于扎克的出现,比莉的妹妹艾比(列侬·帕尔哈姆 Lennon Parham 饰)和好友奥利弗(阿什丽·詹森 Ashley Jensen 饰)显得十分兴奋,与此同时,扎克的怪咖好友戴维斯(尼古拉斯·怀特 Nicolas Wright 饰)也入住了比莉的公寓,当比莉反应过来时,事态的发展已然超出了掌控。Billie, a woman in her 30's, wants to settle down and have a family. When she tells her boyfriend James this, he tells her he doesn't want that, so they break up. She gets drunk and hooks up with a guy named Zack. Upon discovering that she's pregnant, he moves in to try and help her.