Release Message:  The Planeteers travel back in time of pursuit of Hoggish Greedly (Ed Asner) and Sly Sludge, who intend to purchase the Grand Canyon decades before it becomes a landmark and use it as a landfill.

Description:  The Planeteers travel back in time of pursuit of Hoggish Greedly and Sly Sludge, who intend to purchase the Grand Canyon decades before it becomes a landmark and use it as a landfill.