Ape City is in a panic. Word has spread of the capture of a talking human (Hal) and his bizarre alien companion (Sinestro). What's worse, a group of strange, scarred humans ("Mutants”) are spotted in The Forbidden Zone, being led by a strange-acting Cornelius, who's wearing a ring - a ring Sinestro has long been searching for.
The origin of the Universal Ring revealed! Battle of the Red and Green Lanterns on the Planet of the Apes! As Cornelius' corruption manipulates the mutants into an army of ring bearers, Hal Jordan and Zira will do all they can to save him before it's too late.