S1·E31 The Plan to Kill Dr. Nambu

Nambu's car is attacked by Galactor. But because of Joe, who seems to remember the Devil Star's rose bomb, they escape by a hair's breadth.

Everybody wants to fully concentrate upon protecting Nambu since he's targeted. But Joe cannot agree with them and leaves the villa. In order to control his anger, Joe runs his car around a racetrack. When his parents were murdered, he too suffered a lethal wound by a rose bomb. His memories revive and he thinks of revenge. Just then, he has to save a woman from an accident on the track. Before parting, they make an appointment to race on the track together the following day.

Meanwhile, Nambu boards the cross-continent train, along with Chief Anderson's secretary, in order to conduct an investigation. Ken thinks that it's a Galactor trap and boards the train too. The remaining three team members hide and wait for the Devil Stars in their individual machines. Ken defeats the Devil Star members in the train, but the secretary, having turned into the female commander manages to flee in a disc-shaped plane. Jun defeats the Devil Star members who want to destroy the tracks further ahead. Joe faces the last remaining Devil Star member. He knew the spot through a feather shuriken left by Ken in a map. Their respective weapons clash. The rose bomb pierces the Devil Star's chest along with the feather shuriken. They go past each other and behind Joe's back, the Devil Star's mask falls away. Her face is revealed to be the girl Joe was planning to race.