Rudi & Trudi Episode 21 Strange Mountain Episode Title: Strange Mountain Episode Description: Rudi and Trudi are flying when Rudi spots something shiny. Suddenly the pair find themselves falling through red fog. They land and hit the ground. Once the fog clears they realise that they are inside a mountain. Rudi tries to fly them up and out but it is impossible to fly through the fog. The only other way out is to go down. As they set off they are nearly run over by a bolder and Rudi becomes trapped inside the mountain. Trudi frees him but ends up swapping places inside the mountain...