Ash and Misty, while arguing, discover an Oddish. As Misty's Starmie weakens the Oddish, a Bulbasaur appears and fights Starmie while the Oddish runs off into the woods. Ash jumps in with his Butterfree, but the Bulbasaur is able to escape in the direction of the Oddish.
Our heroes cross a river over a rope bridge that snaps, sending Brock into the river below. As Misty, Ash, and Pikachu hunt for Brock, they set off a couple of traps, finally landing in a net that hangs from a tree!
Fortunately, Brock shows up to cut them down, then brings them to meet a woman named Melanie, who takes care of wounded Pokémon like the Oddish—and sets traps to defend the Pokémon from poachers. The Bulbasaur, we learn, acts as a kind of bodyguard.
Misty apologizes to the Oddish for attacking it earlier, but the Bulbasaur is still hostile because it dislikes Trainers. Meanwhile, Team Rocket has discovered the area and plans to snatch the weak Pokémon.
Will Team Rocket have an advantage against Pokémon that are wounded and unable to defend themselves? And will that Bulbasaur ever warm up to Ash and his friends?