Synopsis for the TV Cartoon Witch Way Out?

Lisa becomes worried when David doesn't come back home. He was removing a thorn from a deer's hoof, but hadn't come back. On the way home, David tells that there are many stories about supernatural creatures in the forest. While going down a steep hill, Swift trips over a rope, and he and David are captured by the trolls. Lisa sets out to find them, and disguised as a witch, makes a sleeping potion for the trolls. When the trolls were asleep, she rescued David and Swift.