Part 6/9:
The duo eventually locates the cave that hides the Master Emerald, but Eggman’s menacing arrival turns their expedition into a nightmare. Amid traps and chaos, a showdown ensues between Sonic, Knuckles, and Eggman. As they navigate the perilous traps, tensions rise and alliances are tested. Sonic's selfless act of saving Knuckles, despite their enmity, begins to shift the dynamics of their relationship.