Jun, who was caught in a chase between Blue Cop and Mega Trucker, manages to obtain Metal Breath and searches for its true identity. By chance, Blue Cop appears when Metal Breath is activated!

The town is thrown into chaos because of Mega Trucker, who can't help but dance when he hears music; Jun teams up with Blue Cop for the first time and successfully seals Mega Trucker.

Jun must prove that Metal Cardbot is not a bad guy in order to clear up Edo's misunderstanding; Edo wants Blue Cop to leave the town, and Jun, who finds out about this, goes to find Blue Cop.

Rumors spread among the students that a black ambulance picks up people and disappears, and a few days later, Teo is taken away by the black ambulance. Anna, who witnessed this, alerts Jun, and Jun and Blue Cop goes to rescue Teo.

An incident occurs where a fire truck travels around extinguishing all the fires. As people starts to suffer, Jun lures the fire truck to the school and summons Metal Cardbot with Metal Breath to stop Phoenix Fire.

Jun experiences strange event where a transparent figure following him on the way to school and after school. Blue Cop, who discovers the identity of this figure, finds Metal Cardbot Shadow X and attempts to seal it with Jun but fails, hoping for success next time.