S9·E3 I'm No Angel

Episode recap

Task: Write a 280-380 word episode recap for Supernatural S9E3 ("I'm No Angel").
Constraints:
Use ONLY verifiable facts from the provided SYNOPSIS and SOURCES.
No invented titles, names, dates, counts, awards, ratings, etc.
No guessing or inventing plot points.
Write original, neutral, encyclopedic prose.
Format: Plain text only (no markdown, no asterisks, no headings, no bullet points).
Word count: 280-380 words.
Synopsis: Castiel makes his way to the Winchesters but discovers a band of angels are hunting him, intent on exacting vengeance for what they believe is his role in their fall from Heaven. Meanwhile, Ezekiel continues to repair Sam, but informs Dean that there is a price to be paid.
Sources:
[1] Series overview: "Saving people, hunting things, the family business."
[2] Series info: Created by Eric Kripke. Broadcast on The WB and later The CW for 15 seasons (Sept 13, 2005, to Nov 19, 2020). Follows brothers Sam (Jared Padalecki) and Dean (Jensen Ackles).
[3] IMDb: Created by Eric Kripke. Cast includes Jared Padalecki, Jensen Ackles, Jim Beaver, Misha Collins. Brothers follow father's footsteps as hunters fighting evil supernatural beings (monsters, demons, gods).
[4] TMDB Cast/Crew: Sam and Dean lost their mother to a demonic force. Father raised them as soldiers to kill paranormal evil.
Episode Specifics (from Synopsis):
Castiel is searching for the Winchesters.
A group of angels is hunting Castiel.
These angels want vengeance because they believe Castiel caused their fall from Heaven.
Ezekiel is working to repair Sam.
Ezekiel tells Dean that there is a price to be paid for this repair.
Series Context (from Sources):
Series title: Supernatural.
Created by: Eric Kripke.
Main characters: Sam Winchester (Jared Padalecki) and Dean Winchester (Jensen Ackles).
Premise: Brothers hunt supernatural beings like demons, monsters, and gods.
Drafting - Attempt 1:
In the episode titled I'm No Angel from the series Supernatural, Castiel attempts to reach the Winchester brothers. While making his way to Sam and Dean Winchester, Castiel finds that a band of angels is actively hunting him. These angels seek to exact vengeance against Castiel because they believe he played a role in their fall from Heaven.