Rajiv Kaul is excitedly looking forward to his 40th birthday and so are his family comprising of his wife and two kids. However, unfortunately, his wife who has arranged the entire party is away from town to stay beside her unwell mother. On the day of his birthday, Rajiv meets Sandy, a hot and sexy friend of his travel-agent friend Vikram Acharya. While the two are attracted to each other, it becomes a night to remember when Sandy and Rajiv decide to spend the night together post the bash. However, soon the memorable night turns into a nightmare when Sandy accidentally hits her head on the side table and bleeds to death.
After recovering from the sudden trauma, Rajiv decides to drink the night away. He wakes up with a start only to realize that all of this was a dream when he doesn’t find Sandy’s body or any of the remnants of the night around. He soon finds out that the party he saw in his dream was yet to happen and that everything he saw then is happening in real life. The fact is reasserted when he contacts Vikram who confirms that he was indeed going to get Sandy for his birthday. On the other hand, to save Sandy, Rajiv decides to visit the hotel she is staying at to warn her but a series of unfortunate incidents lead to her banging her on a glass-top table resulting in her death. Rajiv flees from the scene only to realize that he has left his cellphone in the hotel room. When he returns, he is told by the hotel staff that no one by the name of Sandy has checked into their hotel.
Once again back to square one, Rajiv is now posed with many questions and his challenge is to find the answers to all of them.