The characters are Tama, Momo, Wocket, Tiggle, Rockney, Pimmy, Bupkus, Bengpu, and Chopin. There is no consistent plot. Tama and his friends just have little, family friendly, adventures every episode. The only consistency is when a new friend is made one episode and flash backs.
[Source: Anime News Network]
The Kikaika (literally mechanization) Empire invades our solar system, and in a matter of moments they take over and convert Neptune, Uranus, Saturn, Jupiter,and Mars, and set their sights on Earth. However, one thing stands in their way. Earth's ancient protector and soldier of light, Eldoran. To fight this menace he gifts a 5th-grade class with 3 huge robotic dinosaurs, with the power to merge and form the giant robot Gosaurer, which they then can pilot and use to stop the Kikaika Empire's advances.
[Source: Anime News Network]
The Iron League: a place where teams of robots, under individual "owners", play various sports and duke it out in tournaments. Mach Windy is a member of Dark Prince, a team that doesn't play fair and fights dirty to win. Unsatisfied with the actions of his teammates, he defects against the will of Dark Prince's nefarious owner and joins Silver Prince: the weakest team in the league. Alongside faithful companions such as Magnum Ace and Bull Armor, Mach Windy and Silver Prince will battle against Dark Prince in games of soccer and baseball, and aim for the top!
[Source: Anime Planet]