The bad news being that the lab is under attack by some giant vines. As Speed approaches the lab, the Mach Five is snarled in the vines. He uses the steam jets to get the plant to back off, and using the cutters, gains access to the lab. He takes Pops and the genetic stabilizer back to Mach Research. Sparky loads the genetic stabilizer into a spray can.
Speed arrives at the toxic waste plant and sprays the four mutants.
They return to normal. Speed witnesses Racer X being used as a guinea pig. He turns into a mutant with the characteristics of several nasty animals. Before Speed can spray him, Racer X attacks and Dez takes the spray can. Racer X and Speed go at it.