In the season finale, the Aya Monitor returns to the dawn of time to stop all emotion and life from ever existing. And Hal follows her to find a way to stop her.
With the Aya Monitor after a secret weapon on the planet Ranx, Hal, Kiolowog and Razer join Guy Gardner and the Lanterns to beat her to it.
Back on Oa, the crew of The Interceptor follow a series of clues which span across the galaxy, uncovering information about the mysterious "Science Director", Aya's secret origin, and how to put a stop to her destruction.
The crew of The Interceptor searches the planet Okaara for the mythical Orange Lantern battery as a way to combat the Aya Monitor. The problem is, it's guarded under the watchful, and very greedy, eyes of Larfleeze, the one and only Orange Lantern.
The evil Aya Monitor invades the planet Zamaron, blaming the Star Sapphires for the pain she feels from her heartbreak. The unsuspecting Carol Ferris is summoned to represent Love in a battle against Hate's champion, Atrocitus of the Red Lantern Corps.
Hal, Kilowog, and Razer crash land on a planet with a poisonous atmosphere. With their power rings nearly depleted, their only hope is to seek refuge in a nearby domed city, completely overrun by thieves and hooligans. But teamwork's a little tougher when no one can understand anyone else!
A horde of Manhunters gives chase as our heroes' hope runs thin. Their will is truly tested as they prepare for an inevitable face-off against the unstoppable Anti-Monitor - a battle for the lives of everyone in the galaxy.
Hal, Kilowog, Razer, and Aya attend a rebuilding ceremony between the Guardians and the Red Lanterns on their capitol planet, Ysmault. However, a rampant malfunctioning Manhunter threatens to derail the fragile state of peace between both sides.
Hal Jordan loves having Sinestro around because, at heart, the senior Lantern is a rule-bender, when the situation calls for it - something Hal entirely understands. But when Sinestro starts behaving erratically, Hal has no choice but to lock him up.
Hal, Kilowog, and Aya visit the Blue Lantern planet Odym to seek help in their battle against the Manhunters. Unfortunately, the power-boosting effect of the Blue Lanterns has an unexpected (and unwanted) side effect on their enemies...the Manhunters.
Knocked into the Antimatter Universe, Hal lands on a steampunk world. There, he meets the idealistic Steam Lantern, who patterns himself after the Green Lanterns. With help from his new allies, Hal must find a way back home before the Anti-monitor destroys his universe.
Hal tries to get the band back together when he realizes Aya's very existence is in danger. They soon find themselves in a fight for their very lives when they encounter the Anti-Monitor, a godlike creature from a parallel universe who's reprogramming the Manhunters to help him consume the universe.
Hal finds out that a new Green Lantern, Guy Gardner, has been named as his replacement on Earth. Hal and Guy get along like gas and fire which doesn't help in their battle against an unprecedented threat - autonomous killing machines known as "Manhunters."
Atrocitus wreaks vengeance on Oa, as the Red Lantern armada crosses into Green Lantern space - with only Kilowog to stop them. It's up to Hal to take the shortcut back to Earth by teleporting across the universe from the Star Sapphires' homeworld of Zamora and stop Atrocitus and Zilius Zox from killing the Guardians.
Hal and the Green Lanterns travel to one of the Ancient Wonders of the Galaxy - the Lighthouse - so they can seal off any path through The Maelstrom and prevent the Red Lantern armada from getting through. Atrocitus, the Red Lantern leader, sets a trap for Hal and manages to steal the ship so that he may finally have his vengeance on the Guardians.
The Green Lanterns travel to a prison asteroid to find a legendary code that holds the key to crossing an impenetrable asteroid barrier called "The Maelstrom" before Atrocitus and his Red Lantern armada can do so. Unfortunately, a Thanagarian prisoner named Byth Rok is the only one that knows the code.
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