In the prologue we learn that long ago the Guardians of the Universe, who are aliens from the planet Oa, harnessed the energy of willpower. With it they built a giant battery that powers the rings of an elite force of intergalactic police called the Green Lantern Corps. Each individual green lantern patrols a sectors of the universe, and can use their power ring to fly and create beams of energy that can be shaped into anything they can conceive.
In the present, Abin Sur, the green lantern for sector 2814 crashes on Earth while fighting a villain named Parallax, and is mortally wounded. His power ring follows its programming to find a successor and selects Hal Jordan, a fearless but arrogant test pilot.
Jordan is transported to Abin Sur, who swears him in before dying. Jordan hears approaching vehicles and flees the scene in confused shock.
Back at home he manages to activate the ring and shortly afterwards is transported to Oa, where the Guardians greet him and put him in training with veteran members. Eventually he returns to Earth with the ring, even though his trainers have deemed him a failure.
As it turns out, while he was gone the body of Abin Sur has been discovered and dissected by the military. And Hector Hammond, the lead scientist in charge of the dissection has become possessed by a shard of Parallax which was in the body. The doctor is driven mad but develops superpowers as a result.
Hammond goes on a rampage, attacking a party that Jordan's girlfriend is attending. Jordan swoops in and saves the day but realizing Parallax is alive he travels to Oa to warn the Guardians.
When he returns to Earth he finds that Hammond has been consumed by Parallax, whose power is threatening the whole city. In order to defeat the villain, Jordan realizes he needs to become the green lantern that the ring chose him to be.
Best part of story, including ending:
The effects where too fake and not effective.
Best scene in story:
I liked the scene where Jordan is in costume and mask but his girlfriend recognizes him anyway.
Opinion about the main character:
Jordan is too much of a cliche reluctant hero with maturity issues.