Kaitlin's photo shoot and J.B. and Ryan's motorcycles are destroyed when vicious plants come to life in Cross World City Park. Suspecting that Grimlord is behind this ecological stunt, J.B. and Kaitlin take a sample of the killer vine back to the lab for analysis. Meanwhile, Ryan is attacked by the killer vines. The vines later mutate into plant mutants: CHLOROPHOID and VEGBOT. V.R. Ryan battles Veg-Bot while V.R. J.B. and the twin V.R. Kaitlins fight Chlorophoid. The plant mutants must be destroyed before all life on earth is threatened. Once the Troopers are victorious, they give the plant samples to a biological foundation for research. The foundation rewards the teens with two brand new motorcycles.