Yeti or Not

The Silvers leave Fogville for a trip to Mountaintop Lodge. When they get there, though, they find out that some thief has stolen all the hotel's white linen. Bat Pat and Leo suspect that some kid is going to use them as invisibility capes to win the Lodge's annual snowball tournament. The culprit turns out to be a yeti who's desperately trying to cover the signs of his aging!