Sonic and Tails are taking some much needed rest and relaxation on an island beach, but their serenity is soon disrupted by a crashing plane. Aboard is the President’s aide, who summons them to the palace; yet upon their arrival they discover that Dr. Robotnik has kidnapped the President and his daughter! It seems that his creation, Metal Robotnik, recently attacked Robotropolis with a battalion of robotic demons, and sabotaged the city’s generator. Unless it is stopped, there will be a giant explosion! For the sake of the President and his daughter, Sonic and Tails must find Metal Robotnik and put a stop to the impending explosion – but little do they know that soon they will face a new enemy who looks exactly like Sonic and wants him dead…
For years, the kingdoms of Segua and Ninteldo have been locked in a bitter, brutal war to control the land of Consume. The blue-eyed Segua soldiers have been on the defensive, while the red-eyed Ninteldo warriors remain in power, controlling 90% of the world. That is, until a man named Gear blessed extraordinary speed joins the Segua army after the death of his friend, an act that may turn the tide of battle in the underdog's favor. Together, he, his sister Nel, archer Opal and perverted Tejirof will do their best to try to help Segua regain its former glory.
Looking for a new modern/Japanese version of Sonic? Try Aoi Sekai no Chuushin de, a story about a war between countries representing Nintendo and Sega. Gear is a human version of Sonic, a very fast and talented fighter. If you're a Sonic fan, I recommend you check it out.
Both anime are video game themed. Sonic the Hedgehog: The Movie directly based on the video game series on the same name, while Aoi Sekai no Chuuchin de is loosely based on the video console 'wars' of the early 90's (though retold in a fictional midevil setting with an actual war) and has alot of video game references including the characters (who are based on video game characters or in some cases, a game series itself). Gear (the main character of Aoi Sekai no Chuushin de) is obviously based on Sonic. Personally, I think Sonic the Hedgehog: The Movie is the better on the two, but if you like one you may find some enjoyment from the other (especially if you are a Sonic fan and want to know what a human version of Sonic would look like). Just be warned that Aoi Sekai no Chuushin de has some ecchi in it while Sonic the Hedgehog: The Movie is much more family freindly.