The invisible copycat

Pickle is bored. He's not interested in what the other Megaminimals are doing, so he invents a new game: the copying game. And very soon he's copying all the other Megaminimals. But not surprisingly, they don't like Pickle's new game one bit. In search of some peace and quiet, they sneak off to the Dressing-Up Corner, where they travel to a silent cave deep underground. But when they raise their voices, they find that someone is repeating everything they say. It must be Pickle - but he's nowhere to be seen. What's going on?