Sonic discovers Eggman is collecting the Chaos Emeralds and already has four of them. Sonic must gather all the Chaos Emeralds before Eggman.Sonic discovers Eggman is collecting the Chaos Emeralds and already has four of them. Sonic must gather all the Chaos Emeralds before Eggman.Sonic discovers Eggman is collecting the Chaos Emeralds and already has four of them. Sonic must gather all the Chaos Emeralds before Eggman.