Bygone Adventures: Episode 2 Curse of the Skull

While exploring a hidden cave, Sonic discovers a long lost artifact, unaware that it is the skull of a werehog. Everything goes wrong from there when he accidently cuts himself on one of its fangs, not knowing that the werehog's bite still has a very potent effect. Meanwhile, trouble is rising as Eggman continues to investigate the reason for Shadow's interference of his last plot.