Based on the manga by Tetsuhiro Koshita, Bakusou Kyoudai Let's & Go!! has 2 main seasons evolving around the Go brothers and the TRF Victorys. The 3rd season, Bakusou Kyoudai Let's & Go!! MAX evolves more around 2 new main characters, but the primary idea is the same...Racing!Let's & Go!! focused on Retsu and Go Seiba, two young brothers who recieve racing cars called "Mini 4WD" by Dr. Tsuchia. From there on, the series portraits those two boys, training and costumizing parts to later on participate on Japans Cup, where all of Japans racers enter to be the best of the best!