Green Lantern: Beware My Power

John Stewart, a former Marine and Medal of Honor recipient, witnesses Ganthet's ship crash nearby. The Power Ring chooses him, snapping him into space and delivering him to the Justice League Watchtower. This unexpected selection marks the start of his new life among Earth's heroes.

The ring transports him to the Watchtower, where Green Arrow, Martian Manhunter, and Vixen monitor a disturbance in space. They brief him on a growing threat and the apparent disappearance of other Lanterns as the Guardians stay silent. Stewart steels himself for what lies ahead.

Stewart and Green Arrow board Ganthet's repaired ship and travel to Oa. They reach the central world to find it in ruins and the Green Lantern Corps slaughtered. The scale of the crisis becomes personal as they sense a deeper conspiracy at work.

On Oa, Shayera Hol explains the long-simmering Thanagarian-Rannian conflict and the Zeta-Beam project that linked both worlds. She shows security footage of a Rannian ship docking at Oa just before the attack. Stewart and Arrow resolve to uncover the truth behind the attacks.

Shayera outlines Jordan's role as overseer of the Zeta-Beam project and its disastrous misfire that reignited the war. The team resolves to uncover the hidden mastermind behind the recent assaults. The stakes are now cosmic in scale.

The trio travels to a raided Rannian outpost and meets Adam Strange, teleported by Zeta-Beams' effects. Strange denies that Rann attacked Oa and guides them toward the Rannian High Command, where a battle with Thanagar forces erupts. The truth behind the war begins to emerge.

Captain Kantus reveals that Sardath has repurposed the Zeta-Beam project into a weapon meant to destroy Thanagar. The revelation shifts the focus from externals to an internal doomsday scheme within Rann. Shayera and Strange piece together evidence from past assaults.

Shayera and Strange review footage and realize a hidden third party has impersonated both Rannian and Thanagarian ships to fuel the conflict. The orchestrator’s interference points to a broader conspiracy behind the war. The team presses forward to uncover the mastermind.

Following the clues, they locate a hidden base inside an asteroid and battle Yellow Lanterns along with assassins Lord Damyn, Kanjar Ro, and Despero. They are captured by Sinestro, whose own ambitions threaten more than the war. The confrontation reveals the depth of Sinestro's schemes.

Jordan is revealed to be alive, having been released by Sinestro's sabotage and ring. The team escapes as Sinestro and his Lanterns attack Rann in pursuit of Sardath's weapon. The group realizes the Lantern Corps is deeply corrupted at its core.

Using Sardath's Zeta-Beams data, the group is teleported to Sardath's secret base for a final confrontation. Sinestro and his Lanterns follow, forcing a brutal battle to determine the fate of the weapon. The stakes rise as the trio fights to stop the doomsday plan.

During the clash, Stewart reluctantly kills Sinestro, and Jordan brutalizes two of Sinestro's assassins, showing how far their leader has fallen. Green Arrow and Stewart grow wary of Jordan's actions as the battle intensifies. The truth about Parallax sinks in as Sardath's data becomes crucial.

Jordan reveals that the Parallax Entity infected him during captivity and has corrupted his will. He proclaims a galaxy-spanning plan to destroy both Rann and Thanagar to remake the universe. Stewart and Green Arrow brace for a final confrontation with a godlike adversary.

Green Arrow shoots and kills Jordan to stop the spree, and Strange sacrifices himself by leaping into the Zeta-Beam path to teleport the beam away. Stewart returns to Earth and distributes Jordan's rings to new wearers to rebuild the Green Lantern Corps. Shayera departs with Ganthet's ship, promising to reunite when the galaxy needs aid, while a toast to absent friends hints at brighter futures and new alliances.