As Tails ponders if this reaction has something to do with the tsunami that appeared days ago, Sonic finds a ring with ancient inscriptions on it that gives him a strong sense of nostalgia and prompts him to set out on another adventure. Meanwhile, Sonic is relaxing somewhere away from the Floating Island until his friend, Tails, detects a Chaos Emerald energy reaction out at sea with his Jewel Radar. Believing Robotnik, Knuckles teams up with him to stop Sonic. He also "warns" Knuckles about Sonic, who is an evil hedgehog that plans to steal the island's Master Emerald. Learning of Knuckles' position and duty, the doctor tells him that he is a scientist who has come to "investigate" the Death Egg. Robotnik meets Knuckles the Echidna, the guardian of the Floating Island. With this new plan in mind, the doctor starts to build a base on the Floating Island while catching the local Animals to turn them into Badniks.
He also detects the energy of a giant Chaos Emerald on the island, which he can use to re-launch the Death Egg. Robotnik is aware that the Chaos Emeralds are somewhere on the Floating Island. Fortunately, the island does not sink into the sea instead, it stays slightly above the sea as if nothing has happened. Robotnik's Death Egg falls from orbit and impacts the Floating Island along the way, thus pushing the island into the ocean and creating a giant tsunami.
See also: Sonic the Hedgehog 3#Plot and Sonic & Knuckles#Plot Storylinesįollowing the West Side Island incident, Dr.