Auch Lügen will gelernt sein(2010)

His job is on the line, the children are annoying and things have been better with his wife Marion: Horst Michalke urgently needs a vacation. But it all comes to nothing when he drives over a man while drunk. Afraid of the police, Horst takes the unconscious man home with him. When the stranger wakes up, he claims to have lost his memory and takes up residence with the family...