Thirty Days in Jail (1966)

Medhat, rich businessman, has committed a crime of burning a man's mustache and was sentenced to be in jail for 30 days. He convinced Amsheer, his bodyguard, to replace him in jail. After finishing the jail period, Amsheer decided to take advantage of the situation to stay in Medhat's house pretending to be his old friend. Ironically, he falls in love with Medhat's fiancee.