Steven is kid on vacation with Professor Tengai along with his fellow class mates.
After Ashley finds the chamber where the Dark Bit-Beasts are sealed, he accidentally breaks Dark Draciel's seal and gets possessed by him.
He later attacks Daichi along with the other Shadow Bladers to get the power of the Golden Dragoon. When Tyson comes to rescue Daichi, Steven along with the others battle him and seal his bit-beast.
He is next seen when he joins the others in battle with Kai. The four shadow bladers are about to seal Dranzer when they are interrupted by Tyson, Ray and Max. In the battle that follows, he and Ashley are the only ones who don't survive the first collision of special moves.
After Daniel and Henry lose, he returns to normal and had no Memories of the event that happen.