You were having the best day of your life. You were promoted, your father gave you a new car, you won the lottery and best of all, you're getting married to the girl of your dreams. But there was on person who particularly hated your good fortune. He plans to take what is yours and leave you to die.
Now you are trapped in a huge building and the only way out would be three crystals. Unfortunately, this building wants you inside at all times. It's keeping you from getting the crystals by all means.