Tomica Kizuna Gattai: Earth Granner

Earth Energy is generated by the planet's rotation, and the alien Dark Spinner has come from space to steal it and transform it into destructive Dark Energy. To resist the invasion, the Earth Defense Team Earth Granner recruits the twin brothers Raiga and Kuga, whose courage makes them compatible with powerful animal-shaped machines.

Raiga fights alongside Gao Granner Leo while Kuga partners with Gao Granner Eagle, combining their machines into giant warriors when the enemy attacks. As Dark Spinner sends increasingly dangerous threats toward Earth, the twins must strengthen their bond with their partners and with each other to protect the energy that keeps their world alive.