Diwali Aur Qissa Missing Gift Ka

While cleaning their house for Diwali, Sanju and Madhu discover an old gift that they had gotten Madhu's mom about a year back but weren't able to give it to her because it got misplaced. Madhu is convinced that it was because of Sanju's carelessness but Sanju argues that it was Madhu who lost the gift. Each of them give their versions of what exactly had happened on that day. But who is telling the truth? Who actually lost the gift? And how will they find out what really happened?