In Seeing the Forest for the Trees! One day, another camper named Serena got lost in the forest and wounded her leg after getting startled by a Poliwag. Ash, who was looking for the Poliwag, came to her rescue and wrapped a handkerchief around the wounded knee to brace it. He then helped her up and guided her out of the forest. After arguing about who would keep it, they broke it in two, each keeping one half as a reminder of that day.