Harpreet Kaur aka Happy # 1 (Diana Penty) is accompanying her hubby Guddu (Ali Fazal) to Shanghai in China where the latter is invited to sing at an event. In the same flight, Harpreet Kaur aka Happy # 2 (Sonakshi Sinha) is also flying to Shanghai to find Aman Singh Wadhwa (Aparshakti Khurana)...