Sonic Underground Season 2 Episode 7 No Hedgehog is an Island

Sleet and Dingo escape the Flying Fortress with the Chaos Emerald. In a fight over who will control the Emerald's power, Sleet and Dingo drop and break the Emerald in two. Instantly, a rash of earthquakes and other natural disasters are sparked by the emerald's energy. Knuckles and the Hedgehogs turn to a relative of Knuckles for answers of how to stop Mobius from being slowly devoured by the emerald's force and find that the only solution to end the obliteration of Mobius is to make a deal with their arch rival Robotnik.