Red Flag is a comedy that follows Hesham, a flight attendant who pretends to be a commercial pilot as part of his carefree attempts to impress women. His life takes an absurd turn when he falls genuinely in love with Habiba and decides to leave his bachelor lifestyle behind. Because of his demanding work schedule, Hesham authorises his father to complete the marriage formalities on his behalf, but a bizarre mix-up leaves him legally married to four women at the same time. When his father unexpectedly suffers temporary memory loss, Hesham is left without the information he needs to undo the three unwanted marriages. With Habiba unaware of the situation, he races to fix the complicated mess before his secret comes to light, setting up a series of comic misunderstandings, relationship troubles and increasingly chaotic situations.