It's the second week of the Speedia 500 to determine the leader of the planet Velocitron. Cosmos is still hosting, and notes the emergence of three mysterious black racers—two race cars and... a locomotive? The previous racers are surprised at this intrusion into their race.
One of the black race cars reveals himself to be Shadowstrip, an expert in dark courses who shoots out the lights in the tunnel he's travelling through. Bragging of having obtained the power of shadow, Shadowstrip claims that the darker it gets, the more powerful he is. He's interrupted before he can reach the goal, though, by Crasher creating powerful earthquakes that cause the shadowy Decepticon and Clampdown (with Miko Tezuka inside) to fall into a newly created crack in the ground.
The remaining new racer easily foils Crasher's plan by revealing his space shuttle mode to fly over the crack. Proclaiming this triple changing ability his new power obtained after a remodel, the space shuttle reveals himself as Galaxy Shuttle and he goes on to win the race! The other racers aren't appreciative that this intruder went on to win, but things become more chaotic as many Transformers who were spectating join in for a new race!
Meanwhile, Dia Cinders's G1 World counterpart is arrested by her and Burnout.