Sonic the HEDHUG - Classic view, episode 28 - Evil isolation ward

The insidious villain showed his cards and once again brazenly threw Sonic into the depths of the nightmarish Labyrinth Zone to finish what he had already started. However, Sonic does not intend to resign himself to fate and wait for his demise. The lives of his friends are at stake, and nothing can stop him - not even the endless horrors of a flooded dungeon!