While we were thinking there's a bulb up in my head, then an idea pops up inside me. I think this is a brilliant Idea and consists of the competition and my dream about them would be the best clue that we have. If I remember it correctly in my dream Evan will build a cyborg, and Rhea will build a weapon. If there is a competition it only means, it was for the competition of invention. That must be in the letter sender. All we have to do is how to know what was on the box? If my idea were right then what is the connection between the invitation and the box? That is the most difficult task I've encounter in my life.