Luigi, having won a mansion in a contest he didnt even enter, enters the Boo Woods and locates it. He enters the mansion and is soon attacked by ghosts, but Professor E. Gadd appears and fights off the ghosts with a vacuum. He tells Luigi that the mansion appeared out of thin air and is an illusion, and that Mario was captured by King Boo and his minions. He trains Luigi to use his vacuum invention, the Poltergust 3000, to vacuum up ghosts and the Game Boy Horror to communicate with E. Gadd, scan objects, and see a map of the mansion.
