Fred, Daphne and Velma travel around the world in the Mystery Machine. Together, they solve mysteries and have fun. With the help of the included ghost-hunting cards, which they review on their monitor (1 x AAA battery required) inside the Mystery Machine, they are able to find the ghosts. Discover ghost cards in other Scooby-Doo! playsets, which can also be viewed on the illuminated monitor inside the vehicle.