The story revolves around Hafeez Bin Ali (Ritesh Deshmukh) and Praveen Chaturvedi (Pulkit Samrat) both from Bangistan but different nations. Hafeez is number one in his clan for having a big beard and works underground in Telemarketing as “Harold”. Praveen is a man who shows a lot of respect to his god Guruji and attacks anyone who insults his beloved god. However, both their bosses (both played by Kumud Mishra) encourage them to go to Poland for a mission and hosting the worlds best bombers so the 2 terrorists go. Both Praveen and Hafeez meet in the airport and decide to change their names to Allah Rakha Khan and Ishwarchand Sharma but both get arrested. Although still arrested, they still go to Poland to become bomb experts. The 2 go to local bomb experts as both Allah Rakha and Ishwar go to a Chinese restaurant owner and a potato farmer where Allah Rakha learns that the Chinese restaurant owner speaks Hindi and gives him specific bombs. Ishwarchand goes to the potato farmer Mr. Babinski who is actually a master spy and saboteur and offers him a lot of bombs but Ishwarchand recommends for a cheaper bomb. The 2 of them later fall in love with Rosie (Jacqueline Fernandez) then a love triangle between the 3 begins to spark up. When Rosie's parents anniversary happens they both ask about her religion to which she replies that she doesn't follow any religion as all religions propagate the same thing. Hafeez and Praveen become best friends and while drinking liquor both reveal their original identities. They get embroiled in a fight in which a bomb explodes which Praveen was making it. They get injured in a hospital and get labeled as 'Terrorists'. The North Bangistanis plan and train another suicide bomber Zulfi (Arya Babbar) to create terror since Hafeez's name is out.Hafeez realizes that his boss wants to just spread terror in the name of religion and explains Praveen the same but Praveen acts in front of Hafeez that he is with his side but actually he wants the explosion to happen. When both reach the conference he finds Praveen activating the bomb in a washroom and then they get into a fight in which Praveen realizes his mistake. At last, they both expose the nature of their bosses and people misguided in the name of religion. But the bomb which was placed by Zulfi explodes leaving Hafeez and Praveen injured and then they are regarded as heroes.