Your favorite great aunt, the eccentric one, has died and left you a letter containing some vague language about a 'fantastic treasure' and also a little silver key. No one knows what the treasure is, but if it's anywhere it's somewhere in her old house. Unfortunately the house is scheduled for demolition in three days to make room for a shopping center.
So, that's your challenge! Explore the house, solve the mystery, get your treasure, and all in three days. But you may not be the only one looking for it, so watch your step!