Ep 10. Snow Way Out!

Ash, Misty, and Tracey manage to get lost on the snowy mountain. While trying to find their way back, they stumble upon a cabin filled with Pokemon including Pikachu's former friends -- a group of wild Pikachu that have never been trained. One of the girls at the cabin, named Pietra, was also a trainer whose Pikachu had run away. At first, the wild Pikachu are afraid of the humans, but eventually, they warm up to them. Meanwhile, Team Rocket also gets lost on the mountain and ends up falling into an underground river, where they stumble upon a group of Slowbro. They try to capture them but are unsuccessful, and the Slowbro end up smacking them out of the cave. Eventually, everyone finds each other and Team Rocket attempt to steal all of the wild Pikachu, but Ash, Misty, and Tracey manage to stop them. In the end, Pietra's Pikachu decides to stay with the other wild Pikachu, and the group sets off, finally finding their way off the mountain.