The triplets, Biffy, Miffy and Piffy are accompanying their father Mr Lal and mother Mrs Lal to Delhi! Mr Lal is on an official trip to the big hotel in Delhi! However, they check in to a smaller hotel due to the fact that Rock their dog is also with them and this hotel allows pets! What they never fathom is that their stay will throw them plumb into a mystery! They meet up with nasty Mr Kalra who is kidnapped, followed by some surprises that this hotel is full of nefarious activities; undiscovered till now! It takes the combined efforts of the trio to solve the intriguing events that unfold each day they are there!