When you begin the game, you will start out in a room in the year 1942, which is during World War II. In this room there will be a model Titanic and a book that has the word "Memories" written on it. Click on both of these items. After you have done this, walk over to the desk and click on the desk. Once this is done, you should hear a alarm that sounds like a tornado warning. It's a bomb.