There is a tied up prisoner somewhere in the house and you must free him in Escape the Rope Trap. First you need to open the door and search the house. The fat man in front of the door probably knows where the key is, but he needs to be treated to a bunch of bananas, he just went on a diet. Fulfill the conditions and the key will be yours, and then you need to thoroughly explore all the rooms and find the prisoner. He will probably be tied up, so you will have to look for something dirty to cut the ropes, otherwise the hero will not be able to move and escape from the house in Escape the Rope Trap.