家事律師Markus發現假期艷遇的對象Lena懷孕，他以為終於能如願擁有自己的家庭。他決定多花點時間來了解Lena，畢竟兩人相識的時間不長，然而Lena的父親Hartmut對女兒的新男友似乎沒什麼好感。Markus來到魯爾區營地參加Hartmut的50歲生日派對，Hartmut竟動員營地所有人來整Markus，他與未來岳父即將展開一場爆笑的大戰。
Markus, who has always wanted a family, is overjoyed when his holiday fling Lena becomes pregnant. Her father strongly disapproves of him and when he turns up for his birthday, a hilarious showdown ensues between Markus and his future father-in-law.
