Hal dreamt it -- Tells Sinestro who assures him no Yellow ring was ever created, but Hal is now suspicious of Sinestro's character. Sinestro has to visit Earth to get Hal (Sinestro is training him) Sinestro is disgusted by how unorganized and chaotic Earth is. Sinestro takes Hal to visit a world that is run with perfect order -- Sinestro's homeworld - there Hal find a people who are being oppressed by Sinestro who rules with an iron fist . Sinestro assures Hal that this is how his people have lived for thousands of years -- there has always been a dictator. Hal takes on Sinestro who demands the Guardians take away Hal's ring as his arrogance blinds him to the cultures of others. The Guardians agree with Sinestro and take away Hal's ring and Hal is returned to Earth. Then, they discover that Sinestro has not only been ruling over his people, but he's used to ring to execute those who stepped out of line -- The guardians hold trial for Sinestro who is kicked out of the Corps (he blames Hal for this). Sinestro forges the yellow ring- fulfilling Hal's dream. Hal gets his ring back and fights Sinestro