• Composer : Anand Raj Anand , Sanjeev-Darshan Rathod
• Lyricist : Kumaar
• Singer : Wajid Ali , Ritu Pathak

Three friends – Meet (Vivek Oberoi), Prem (Aftab Shivdasani) and Amar (Ritesh Deshmukh) – are all unhappily married and have unsatisfactory sex lives. Meet thinks that his wife Unatti (Karishma Tanna) is having an affair with her boss; Prem thinks that his wife Tulsi (Manjari Fadnis) doesn't spend quality time with him and Amar feels that his wife Mamta (Sonalee Kulkarni) is more concerned about their son, Pappu. One day, the men receive an invite from their college, SLUTS (Sri Lalchand University of Technology and Science), to attend their college reunion. Their wives don't come with them, so the three decide to use the trip to get up to mischief in order to escape their unhappy marriages. When they arrive, they find that everyone else is behaving in an overly conservative manner. This is due to the fear of Principal Robert Pereira (Pradeep Rawat), who hangs people naked on a tree if they disagree with his rules. They find out that a former student, Hardik (Suresh Menon), is in a mental asylum because of the principal's deeds. Meanwhile, Prem meets one of his former teachers, Rose (Maryam Zakaria), who is seen washing her cleavage with water when ice-cream falls on her and is attracted to her. Meet meets Mariam(Kainaat Arora) who causes the car horn to blare because of her big breasts and is attracted to her. Amar meets Mary (Bruna Abdullah) who seductively opens a bottlecork by her breasts and is attracted to her. The men begin to initiate affairs with the women, but soon find out that Rose, Mary and Mariam are relatives to Robert. The men's wives later arrive at the college, intending on joining them at the reunion. The trio receive an MMS message containing footage of each of them getting intimate, and succeed in hiding the video from their wives. They find out that it was Hardik who sent the video, and he blackmails them. Their task is to kill Robert in order to fulfill Hardik's revenge, or else he will show the footage to their wives. They fail in killing him, so they decide to try to delete the videos off Hardik's phone. They succeed and continue to spend time at the reunion. On the last day, Robert mixes a love potion into the soup, which causes people to deal out those they are attracted too. The trio end up being with Rose, Mary and Mariam, and Robert catches them red handed. While being chased by Robert, the girls reveal to the men that he is impotent. When the trio end up on the roof of a building, Hardik pushes Robert, who slides down the roof and hangs on to a bar. The men try to save him but Hardik pushes them, too, and they hang onto Robert. The girls come and push Hardik off the roof and he hangs on to Meet. The three tell Robert the truth about not making love with Mariam, Mary and Rose. The girls strip to their underwear to make a rope out of their clothes but fail. They decide to strip naked to extend the rope with their bras and panties, but the boys fall and end up in the hospital. Their wives angrily ask them what exactly happened that night. Robert calmly replies that due to a misunderstood affair, their husbands suffered this consequence. Shortly later, a doctor comes and informs Robert that he is no more impotent since the blood now properly flows all over his body due to the pressure generated while hanging on the bar. Hardik marries Marlow. The film ends with Amar, Meet and Prem having sex with their respectful wives. Robert and Hardik too have sex with Rose and Marlow. Mary is the one left alone who while bathing naked in a bathtub asks the audience to meet her.

• Track 1 : Grand Masti ( ग्रैंड मस्ती )
• Track 2 : Zulmi Zulmi" ( ज़ुल्मी ज़ुल्मी" )
• Track 4 : Grand Masti" (remix) ( ग्रैंड मस्ती" (रीमिक्स) )
• Track 5 : Grand Masti" (mash up) ( ग्रैंड मस्ती" (मैश अप) )