Watch Sonic Underground - Series 1 - Episode 13 Online Free

The Hedgehogs steal historical artifacts of Mobuis from Robotnik before he can pawn them off at an auction. Sonic and Sonia take one of the pieces to a university professor who informs them that the artifact is actually a bomb from the Mobian war. While his brother and sister are discovering the artifacts origin, Manic, sells his piece to a black-market salesman for cash, who then sells it to Bartleby, and suddenly a bomb has fallen into innocent hands. The Hedgehogs must act fast to retrieve the bomb and protect the treasure that is the key to Mobius past.