The Lemmings have got their hands on an old pinball machine which they are installing in the cabin. Their frenzied game interrupts Grizzy's nap, which threatens to break the machine. The bear gets locked in the garage by the rodents, but he finds a way to escape and get rid of the game and all of its players. Dropped into the jungle, the Lemmings stumble upon a rubber tree. By discovering its rebounding power, they have the idea of making a giant pinball machine in the middle of the trees...