Engine Sentai Go-Onger 10 YEARS GRANDPRIX was uploaded on Toei's Official YouTube Channel. Go-Onger come to know that Sentai activities are restricted in the current world by the rule. Their comrade from the past → Saki Royama is now the member of the organization opposing the Go-Onger.
Miu Suto (Go-On Silver) is seen reuniting with his brother Hiroto Suto (Go-On Gold). Hiroto was living as a Homeless in the recent years without the knowledge of Miu. A mysterious boy who is the key to the story appears before Go-Onger and tells them that they are no longer the ally of Justice but Evil.
The army of the organizations gets authorization to fire Go-Onger. Kegalesia is seen transforming into Go-On Yellow.
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