Fighter pilot Hal Jordan was testing an experimental aircraft when he found himself transported into the desert, to the side of a dying alien who gifted him with a glowing ring, which is charged regularly by a green lantern. By taking the ring, Jordan found himself drafted into the Green Lantern Corps, an interstellar police force that assigned him to protect Earth. Jordan can use his ring to conjure up anything he can imagine.
On a distant planet, a huge pyramid unexpectedly rose from beneath the ground. Its origin was unknown, but it seemed to emanate energy similar to what Batman detected from the invading universe. Green Lantern's nemesis Sinestro has learned of the pyramid's existence and is eager to acquire whatever secret it might contain. Hal Jordan knows only that its energy is dangerous - and that the Green Lantern Corps must stop the Sinestro Corps at any cost.