"Sonic Heroes," a very entertaining new arcade adventure from Sega for GameCube, Xbox and PlayStation 2, has four background stories -- and not one of them make sense.

Don't worry about it, though. All you really need to know is that an evil inventor named Dr. Eggman has returned and all the cute animals from Sonic's world want to get him. That includes Sonic, Sega's world-famous blue hedgehog.

This time, Eggman's enemies are after him in teams. Sonic, for instance, is traveling with Tails, a two-tailed flying fox, and Knuckles, a red echidna with dreadlocks. If, for some reason, you do not wish to hunt Eggman with Team Sonic, you can choose to hunt him as Team Rose (a female hedgehog, a rabbit and a cat), Team Chaotix (an alligator, a chameleon and a bee), or Team Dark (a synthetic hedgehog, a robot and a female bat.)