The 'Old Man' helps Ikki and Metabee fight on water to to beat the bad bully-meanies.

When Ikki wins two free tickets to popular Ninja Park, Erika persuades him to take her as his free guest. Ikki's first choice was Karin, but Erika wants to do a story on the park. Ikki reluctantly agrees because Erika took one ticket and wouldn't give it back. The main attractions to the park are the Explosive Ninja Show that features Ninja-Type Medabot Nin-Ninja and Kunoichi (Female Ninja)-Type Medabot Icknite, as well as the Ninja Castle that says closed for renovations. Disappointed, Ikki and Erika proceed to the Ninja Show. As the Ninja Show begins, Ikki and Erika notice that the monsters in the show look very much like the Rubberobo Gang. Seaslug has decided to hold Ikki and Erika captive until renovations are completed on their new base Ninja Castle! The Rubberobo Gang has stolen the Medals of Nin-Ninja and Icknite, and has complete control over them. Intuitively knowing that Ikki and Erika are in trouble, Metabee and Sailor-Multi (nicknamed Brass) come to their rescue.

While traveling across the nation, training to become the best in the country, a Medafighter stops at Ikki's home. He is looking for a blue and white Medabot that interrupted his training in the mountains. The Medafighter tells Ikki that over 100 Medabots attacked him at one time and defeated his Kintaro-Type Medabot Kintaro. He can't remember seeing an Medafighter, and only remembers a white and blue Medabot with horns. A blue and white Medabot with no Medafighter? That description fits Rokusho, but he can't possibly be the one that did this terrible thing, can he? When Rokusho is confronted, the truth is revealed - it was indeed Rokusho who interrupted their training, but for good reason. Acting alone, Rokusho did this because they were cutting down trees during their training. He stopped their training not with force but with compassion. This sounds more like the Rokusho that we know!

Karin is having a costume party and invited everyone, from Ikki, Erika, and Metabee (who are real glad to be invited) to Samantha and the rest of the Screws (who were surprised to get an invite). Koji got and invite to and he decides to confess his love to Karin at her party. Just as he's about to confess his love, the rubber Robo Gang crashes the party and with all the confusion, Koji confesses his love to Samatha, by accident. But she thinks he's really telling the truth.

A snowstorm causes the school to be closed. Ikki and Erika are having a snowball fight with the Screws, and don't hear the no-school announcement. Still thinking they have school, Ikki, Erika, and the Screws all report to school and are surprised to find no one there. They decide to go home after a while, but they meet up with Tom and Snowbro, who supposedly are the #1 team in Japan. Metabee gets frozen with Snobro's special attack, but quicky thaws and gets back into action.

Ikki and Metabee have to decide what to do. Do they want to mae the rankings for the Medabots Ro-Battle Championships or does he want to save his mom. They both decide to save Ikki's mom who was kidnapped and willingly making soup for the Rubber Robos. When he gets there, Ikki Ro-Battles Gilgirl and gets another point toward his standings. Then he battles 2 more RRG members but it doesn't count toward his rankings cause he already battled them. Metabee uses the Medaforce to win and gets very tired out. When he was about to take his mom back, all the RRG unleashed their Medabots at Ikki and Metabee but Space Medafighter X saved Ikki and his mom. Outside in a safeplace, Ikki and Metabee said that they were just glad to get their mother back and that they didn't care about Ro-Battle Standings but when Space Medafighter X taunted them, Ikki and Metabee chalenged Space Medafighter X to a Ro-Batlle. Is Ikki nuts or what!

After their near defeat in the exhibition match, Ikki and Koji are worried about how they will fare in the championship, especially as Space Medafighter X still hasn't turned up. While the two start arguing about who is going to be team leader, they rescue a little girl from the Caribbean team and let her watch them training. When the robattle begins later that day, Karen has to take MedaX's place yet again, but as the robattle begins they realise that the girl they helped was actually the daughter of Team Caribbean's leader. As the Caribbean rips through Team Japan, the three have to work together in order to defeat their opponents and make it through to the next round. With the three friends finally working together, Henry decides that it is time for the real Space Medafighter X to make his appearance, but how will the team fare against the rest of the opposition.