Here's another summary from yours truly.

 

Ash and them are walking on a path when they come upon a Chikorita bathing in the sun. Ash yells out to see if anyone owns it, no one replies, and Ash fights the Chikorita. He sends out Bulbasaur first, he puts up a good fight, but a stray Vine Whip from Chikorita knocks him out. Ash then sends out Charizard. Chikorita runs at Charizard, Charizard sticks out his foot and blocks Chikorita. Chikorita attacks Charizard with Razor Leaf, Charizard counters with Flamethrower, burning the leaves to a crisp. Charizard then flies at Chikorita to Tackle it, but Chikorita wraps his vines around Charizard and throws him off balance, and into a rock wall, Chikorita still hanging on. Chikorita hits the wall too and is knocked unconscious. Ash picks up Chikorita and begins to rush him to a Pokemon Centre. T-Rocket was spying on the battle from the bushes, and thinks that a spunky Chikorita like the one Ash is holding would be better suited for T-Rocket...

 

Who's that Pokemon? It's Quagsire!!!

 

Ash and them arrive at the Pokemon Centre, and Chikorita begins to stir, and bites Ash. They go inside and Chikorita is brought into the Emergency Room. After awhile, Nurse Joy comes out and tells them that the Chikorita will be alright. Ash and the group go to check on Chikorita, he looks alright, and suddenly, two doctors and a small Pokemon rush in, take the stretcher Chikorita is on. Then Ash recognizes the doctors as T-Rocket, and then they speed away in the Ambulance. Ash then starts running after the van, gets on a ledge above the van, and jumps onto the roof of it. The scene then switches back to Ash, Brock and Nurse Joy, and they are worried about Chikorita. Misty says that Ash'll be alright as long as he has his Pokemon, but then stops short when she realizes that Ash left his Pokemon at the Centre!! Uh oh..... Anyways, back to Ash, him and Pikachu are standing outside a little cottage in the snow, and Ash goes to send out Charizard to melt all the snow with Flamethrower, but then he realizes that he left his Pokemon back at the Centre! The scene switches to T-Rocket, and they are trying to convince Chikorita to join their team. Then, Ash busts in, mocks T-Rocket's motto, and pelts them all with snowballs. During the distractions, Pikachu grabs Chikorita, and they run outside. Ash is still stalling T-Rocket, when he hears Pikachu yelling. Him and Chikorita are trapped!! He runs to help, but is then caught himself too. They break free of the rope binding them all together, and start rolling down a hill, in a humungous snowball!! Eventually, they come to a stop in a tree, the large rope holding the 3 together snaps. Now concealed by snow, they have cover as T-Rocket drives by on a jet powered snowmobile. Ash and the other 2 are walking around, trying to get out of the snow, when Chikorita wanders off. Ash bids him farewell silently, and it starts to lightly snow. Ash and Pikachu find cover and build a fire. Ash starts thinking about Chikorita, how spunky he is, how much stamina he has in battle, his never-ending determination, and he then goes off to find Chikorita, telling Pikachu to stay behind in case Misty and Brock come looking for them. Ash runs around for a while looking for Chikorita and calling out his name, he finds a cute couple of Nidoran (awww) and then eventually spots Chikorita, freezing to death. He then asks Chikorita if he wants to come take shelter with him and Pikachu, and he agrees, and it's evident that he's warming up to Ash. Ash walks back to the shelter he found, Pikachu happy to see him, and both him and Chikorita warm up in Ash's jacket. The morning comes, and they break free of the snow, to find T-Rocket waiting for them, Meowth strapped to a large machine. He pushes a button, and snowballs are flung at Ash. Chikorita attacks with Razorleaf, making the machine malfunction, and it starts pelting Jessie and James with snowballs, then Pikachu steps in, Thunderbolts the machine, and sends T-Rocket flying away again! Back at the Pokemon Centre, Ash is bidding farewell to Chikorita, and walks off, but then Chikorita comes running up, and starts snuggling Ash. Nurse Jenny then says that Chikorita must want to go with Ash, and Ash asks Chikorita if he wants to join the team, he answers yes, and Ash does his victory pose, happy to be the prowd owner of a Chikorita!!! And that's it for today!!