While heading to Nimbasa City, Ash and his friends meet up with Professor Juniper, who has a surprise for them: A Plume Fossil that has been donated from Lenora in Nacrene City. Also, this fossil could be ressurected as an Archen, the First Bird Pokemon. With help from Doctor Fennel from Striaton City, they revive the fossil and an Archen is born, with help from Fennel's Musharna. Upon ressurection it attacks everyone and after being headbutted by Ash it's KO'd. Meanwhile Team Rocket overhears this and is asked by the bad Doctor Zager to capture Archen and get all the computer info. Will they succeed and get all the computer data they need? Will Archen be able to fly as it evolves into Archeops? Yes. And what are those seeds it dropped near the machine?
The gang meets Prof. Juniper and Dr. Fennel. They have found a fossil and will revive the Pokemon inside it! Fennel brings Musharna since the machine to revive the fossil needs power - power in the form of Dream Energy. Team Rocket have been ordered by Dr. Zager to get the info about the machine that revives the fossils. Juniper places the fossil and, with Musharna's power, a Pokemon is revived. The Pokemon is an Archen - a fossil Pokemon from whom Fyling Pokemon originate.
However, Archeon is upset and starts jumping and pecking Ash, Iris and Cilan. Ash holds it to calm down, but Archen howls (some seeds begin to take root when he howled). Archen falls asleep with all the pressure. Cilan goes into the room where Archen is, but Ash and Iris shush him, since Archen is sleeping. Archen awakes, so Cilan gives him food, but it refuses. Archen goes out to eat some berries.
Afterwards, Ash begins to train it how to fly. He sends Tranquill to help Archen to fly. Archen flies for a while, but goes back to ground. Iris sends Emolga to help it, but Emolga electroductes it. Stunfisk goes from Pokeball as well, electroducting Archen, so Archen screams. Ash practices flying with Archen some more, while Fennel reproduces the video Juniper has made. When Fennel goes inside the lab, she sees overgrown plants. Juniper suspects that the seeds must've been with Archen in the fossil.
Archen howls, so from flowers of the plant fruit is grown. Meanwhile, Team Rocket have downloaded info to Dr. Zager, so they can steal Archen. Archen eats the fruit and evolves into Archeops. Archeops flies, amazing everyone. Team Rocket appear, with James' Yamask using Shadow Ball to light the plants on. Ash sends Oshawott and Roggenrola to put the flame on. Jessie's Woobat uses Air Slash, while Yamask Night Shade to keep the gang away. They throw a net on Archeops and electroduct it.
However, Archeon frees himself. Pikachu uses Electro Ball, but Team Rocket gets away. Everyone is sad to see the plant (which should've been Archops' home) destroyed, but more Archops arrive. Archeops joins the group, making everyone relieved. The gang leaves for next town.
- Plume Fossil
- Professor Oak's Live Caster: Druddigon
- Who's That Pokemon?: Archen (US)
- "It looks like a rock if you ask me."
Iris about the Plume Fossil.