Template:Incomplete synopsis
The episode starts off with the gang in a building somewhere on the way to Nimbasa City. Professor Juniper is showing Ash, Iris, and Cilan a plume fossil and tells them that the ancient Pokémon Archen came from this fossil, immediately interesting the group--that is, everyone except Iris, who think it looks like a rock. Professor Juniper slips slightly and tells her everyone has their own opinions. She shows Ash, Iris, and Cilan a picture of Archen, and Iris comments that if Archen is the "First Bird Pokémon" the it must be Tranquill's great-great relative. The group continues to read the manual as Professor Juniper looks over at Fennel, who is on the computer. The fossil is placed in a machine that is powered by Musharna's Dream Smoke. The machine is then activated, scanning the fossil and then creating Archen. After the machine stops, they open up the machine and find Archen. A seed seems to fall off of Archen's plumage. Initially, Archen tries to fight off Ash and friends, confused.