Four sets of friends spend Halloween weekend at the Beautiful Creekside "Kamp of Antietam". Each attending is promised a "Once In A Lifetime" experience, but there's more than just fresh air and fishing going on at the K.O.A.

Lalu and Chinta are neighbours and extremely good friends. One morning both of die and reach hell. However Yandyut exclaims that there was a mistake and that they were not the individuals he intended to kill. He orders Lalu and Chinta to be sent back to the earth but the latter claim for a tour of hell as compensation. Soon the friends find themselves back on earth but soon realize that their souls have been exchanges in error. This leads to a series of confusion of themselves as well as their near and dear ones. In the end their souls come back to themselves and there is no bound to their happiness, much to the amusement of the rest who did not know why they were so happy.

Jyotirmoy rejects Sita and marries Anuva without his grandfather's approval. As a result, he gets deprived from his wealth and the entire property goes to Sita. Will Sita help Jyotirmoy?