The film is a comedy revolving around Kartik Aaryan's character, who is in a live-in relationship with his girlfriend Anaya when Paresh Rawal and his wife barge into his home as guests, setting off a laugh-riot. Aryan and Anaya agree to do a fake marriage so that Aryan gets U.K. citizenship.For this he pays 7000 pounds to Anaya. But at this time some uninvited guest from India come to stay with Aryan for a few days which wreaks havoc in his life. On their marriage night a drunk Aryan tells Anaya that he is in love with her. After a few days Anaya tells him that she loves him too and things start going a little smooth. Things start going well but then one day Chachaji causes an accident in Aryan's office and wants to apologise to Aryan's boss but is unable to.While trying to apologise he stops Aryan's boss from molesting his secretary which causes Aryan to lose his job. After this the simplicity of the guest causes problems for Anaya and Aryan. One day they find out some documents related to Al-Qaeda in Chachaji's bag.Aryan then takes them to a restaurant with their luggage and leaves them alone. Upon returning, he finds out that they were actually in London to collect their sons belongings, who died in the 9/11World Trade Center attack. Aryan and Anaya try to find them but are unable to.They then go to the attack site where they apologize and take them home. In a mid credit scene they see that Chacha and Chachi have returned because Anaya is pregnant with twins and are planning to stay for a long time.
The film was officially announced in July 2016. The title of the film was said to be Atithii iin London.
Casting
The makers of the film initially finalized Lisa Haydon to cast in the film, though eventually Kirti Kharbanda was finalized for the role of Kartik's wife. Paresh Rawal and Tanvi Azmi have been confirmed to play as lead roles in the film.Shafaq Naaz who played Kunti in Star Plus Mahabharat will also be seen in this movie she will be seen as one of the friends of Kriti Kharbanda.
The music is composed by Raghav Sachar and Amit Mishra while the lyrics have been penned by Kumaar, T.S. Jarnail, Navendu Tripathi, Amit Mishra and Saint Shah Hussain. The first song of the film Frankly Tu Sona Nachdi sung by Raghav Sachar and Tarannum Malik was released on 18 May 2017. The second song of the film titled as Dil Mera sung by Ash King, Prakriti Kakar and Shahid Mallya was released on 25 May 2017. The third single to be released was Daru Vich Pyaar which is a recreated version of the song itself from the 2001 filmTum Bin and sung by Taz and Arya Acharya was released on 30 May 2017. The soundtrack was released by T-Series on 2 June 2017 which includes 5 songs.
