When William Gridley arrives from the US in London, he rents part of Carly Hardwicke's house from her and promptly begins to fall in love. Gridley doesn't know that many people think she killed her husband but his boss, the American ambassador, knows and doesn't take this "lapse of judgement" lightly. Since Carly is also American, Gridley saves his job by introducing her to the ambassador, who is promptly smitten and promises to help her. So when a Scotland Yard detective arrives, wanting to get to the truth one way or another, they say they'll help him. And then the comedic complications really begin.

When William Gridley arrives from the US in London, he rents part of Carly Hardwicke's house from her and promptly begins to fall in love. Gridley doesn't know that many people think she killed her husband but his boss, the American ambassador, knows and doesn't take this "lapse of judgement" lightly. Since Carly is also American, Gridley saves his job by introducing her to the ambassador, who is promptly smitten and promises to help her. So when a Scotland Yard detective arrives, wanting to get to the truth one way or another, they say they'll help him. And then the comedic complications really begin.

Charlie is the favorite of his landlady, and the other boarders are jealous. He cares for her after she falls from a ladder. Her son photographs what looks like an amorous moment. He next photographs his father in a similar situation with another woman. That evening the boy puts on a slide show for the guests, resulting in a battle between Charlie and his landlady's husband.

Charlie is the favorite of his landlady, and the other boarders are jealous. He cares for her after she falls from a ladder. Her son photographs what looks like an amorous moment. He next photographs his father in a similar situation with another woman. That evening the boy puts on a slide show for the guests, resulting in a battle between Charlie and his landlady's husband.

胡錦飾演牛家大院的女房東水仙，聽聞黃山溝打仗，難民都要逃難至此，便於丈夫牛魔王（雷鳴）商議把房子租給難民，賺取難民錢，之後便開始處處為難大院的租戶，逼迫他們離開。谷明倫飾演革命份子程新民，受了槍傷被一租戶救了下來，程新民說革命軍打了勝仗，難民都各自回家了，於是和租戶們商量好了對策將計就計，成功留在了牛家大院，還讓鐵公雞水仙每個月減租三毛錢。北洋軍閥的師爺逮捕了程新民，水仙聯合各租戶出錢出力，途中救出了程新民。

胡錦飾演牛家大院的女房東水仙，聽聞黃山溝打仗，難民都要逃難至此，便於丈夫牛魔王（雷鳴）商議把房子租給難民，賺取難民錢，之後便開始處處為難大院的租戶，逼迫他們離開。谷明倫飾演革命份子程新民，受了槍傷被一租戶救了下來，程新民說革命軍打了勝仗，難民都各自回家了，於是和租戶們商量好了對策將計就計，成功留在了牛家大院，還讓鐵公雞水仙每個月減租三毛錢。北洋軍閥的師爺逮捕了程新民，水仙聯合各租戶出錢出力，途中救出了程新民。

主人公杨阳家境殷实，大学毕业后，为体验生活去了一家超市当业务员。在这过程中他结识了女友钟灵，他十分珍视和女朋友的感情。因为两人地位悬殊，他的母亲极力反对他们的感情，他的女友为此郁郁寡欢。突然有一天，心情低落的钟灵被一辆疾驰在马路上的卡车撞倒，不治身亡。杨阳因此深受打击，患了精神疾病，并失去了以往的记忆。而后他遇到了两个长相一模一样的姑娘，性格温柔贤淑的李可可和性感泼辣的李爱爱。阴差阳错，杨阳和李可可合租了一套公寓，并发生了一些令人啼笑皆非的笑话。与此同时，杨阳也被这两个长相相同，性格迥异的女孩捉弄得晕头转向，杨阳逐渐地对这两个女孩的身份产生了怀疑……

主人公杨阳家境殷实，大学毕业后，为体验生活去了一家超市当业务员。在这过程中他结识了女友钟灵，他十分珍视和女朋友的感情。因为两人地位悬殊，他的母亲极力反对他们的感情，他的女友为此郁郁寡欢。突然有一天，心情低落的钟灵被一辆疾驰在马路上的卡车撞倒，不治身亡。杨阳因此深受打击，患了精神疾病，并失去了以往的记忆。而后他遇到了两个长相一模一样的姑娘，性格温柔贤淑的李可可和性感泼辣的李爱爱。阴差阳错，杨阳和李可可合租了一套公寓，并发生了一些令人啼笑皆非的笑话。与此同时，杨阳也被这两个长相相同，性格迥异的女孩捉弄得晕头转向，杨阳逐渐地对这两个女孩的身份产生了怀疑……