Yamato takes Rock and Tsukumo to Building 5 for training. Rock challenges Samon to a duel, but he is defeated by only one finger. The warden gathers all the supervising officers before she leaves for her business trip. Nimaijita, the deputy supervisor of Building 2, blames Samon that Nanba Prison’s reputation is ruined because of what happened in Building 5 in the past. Unable to take it any longer, Samon leaves the room. This is because someone important to Samon is related to this incident.

Serval and Bag find out that Japari Park has a "bus"--the perfect way to traverse the park. They recruit Jaguar to help them get to it, but when they find it...

After going their separate ways, Tiger finally understands what it means to be strong. Ace remembers what Sonia said as well, and puts it together to activate Soul Brave. Succeeding in his bold move, Ace defeats Tiger and moves on to the next match!

The time has come for the young Riders to venture forth beyond Hakum Village, accompanied by excitement, responsibility, and not a little trepidation.

Dogstorm and Cat Viper share their story of being on the journey with Oden and Roger but are interrupted by Nami who is concerned about the sea route. Meanwhile, Jack is plotting to bring down the Mokomo Dukedom again!

The "First Stage" of the U20 Championship begins! The battlefield is none other than… Planet Cray!? The battle for survival of the young fighters commences.