Guest Iin London is a romantic comedy-drama and the sequel to Atithi Tum Kab Jaoge? The movie revolves around Aryan Shergill (Kartik Aryan), who lives in the U.K. and pays 7000 pounds to Ananya (Kriti Kharbanda), a U.K. citizen, to do a fake marriage as he desperately wants a U.K. citizenship. The problems arise when Aryan’s uncle, Gangasharan (Paresh Rawal), and aunt, Guddi (Tanvi Azmi) come from India to visit Aryan. Aryan finds himself in the midst of chaos when he and Ananya have to pose husband and wife in front of his uncle and aunt.