Pororo and his friends go on a picnic to the forest. Pororo and Crong leave their backpacks on the train, and when they go back to get them, they get separated from their friends. Pororo and Crong try to catch up to them, but on the way, they see a butterfly that’s caught in a spider’s web and they rescue it. Suddenly, it starts to rain. The butterfly leads them to the base of a tree in order to avoid the rain, and then somehow they arrive in Butterfly Forest.