Voir Adventures of Sonic the Hedgehog, Season 1, Vol. 2 - Episode 17

First in a four-part Time Travel series. Robotnik invents a time machine to go back in time and gather four powerful gemstones. His first attempt is on the high seas, but Sonic goes into hyper-Sonic-overdrive, and reverses time to go after him. Robotnik finds the gem stone in a buried treasure, but loses it again and is forced back to the future by Sonic.