Watch Green Lantern: Emerald Knights online free with HQ / high quailty. Stream movie Green Lantern: Emerald Knights. The sun of the Green Lantern homeworld, Oa, is becoming a gateway for Krona, an evil anti-matter alien tyrant that once sought to destroy all life. As precaution the Guardians of the Universe decide to evacuate Oa of all valuables, such as the Central Battery. While in line to charge their rings before the Battery is taken away, Green Lantern Corps rookie Arisia Rrab converses with Hal Jordan and expresses her selfdoubts as the newest Green Lantern. In response, Hal tells her the story of the first Green Lantern:
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